15 Most Amazing Feeling in the World

15. Putting chapstick on your dry lips


14. Walking on the grass with bare feet

13. Peeling glue off your fingers

12. The cold side of pillow

11. A clean shave

10. When someone plays with your hair


9. Dipping your fingers in wax

8. Feeling completely free

7. Making a new friend

6. Putting your hand in beans

5. Dancing in socks on a wooden floor


4. Warm clothes from a dryer

3. Succeeding after you've work hard

2. Laughing hard, until it hurts

1. Popping bubble wrap





What are your favorite feeling? Tell in the comment section!



















Source: Seriously Facts

10 Most Unusual Sports in the World

You have too much watched, played and heard about Football, Tennis, Basketball, Baseball,Rugby and Cricket. These mainstream sports attracts the most. However, there is more to sports than just hitting a ball. There are many unusual sports in the world that you might not have heard about or discovered. Here is our list of top 10 Unusual Sports. You probably don’t agree, but we choose this list with many unusual sports. Hope you will like it. How many of you have heard or played such kind of sports? Have a read and tell us in comments.

10. Oil Wrestling

Oil wrestling is held around the world, though one of the oldest competitions is in Kirkpinar, Edirne Turkey, held in June each year. The wrestling is part of a festival, dating back to 1357 celebrating an Ottoman victory. The contest, known as pehlivan covered in olive oil trying to wrestle the other to the ground – maybe not everyone’s idea of fun. Oil wrestling festivals also take place in northern Greece in the Eastern Macedonia and West Thrace. In recent years, this style of wrestling has also become popular in other countries, particularly the Netherlands and Japan.


9. Poohsticks

Poohsticks is a sport first mentioned in The House at Pooh Corner, a Winnie-the-Pooh book by A. A. Milne. It is a simple sport which may be played on any bridge over running water. Each player drops a stick on the upstream side of a bridge and the one whose stick first appears on the downstream side is the winner. The annual World Poohsticks Championships have been held at Day’s Lock on the River Thames in the UK, since 1984.


8. Bed Racing

The sport of Bed Racing has been embraced by the people of the North Yorkshire Town of Knaresborough. The first race in 1965 was only open to Army, Navy and American Marines, but now the competition is open to anyone.The competitors race in teams of five, plus one on the bed. Each team must provide their own bed, decorated in the theme for the year. The bed runs on four wheels, but also need to be able to float. The 3km run race begins and ends at Conyngham Hall. About halfway through the run, the teams face the one-in-five gradient climb to Castle Top before it’s back down the hill and toward the final challenge – crossing a river.


7. Zorbing

Zorbing is the recreation or sport of rolling downhill inside an orb, generally made of transparent plastic. Zorbing is generally performed on a gentle slope, but can also be done on a level surface, permitting more rider control. Though much of the publicity about this activity describe it as an extreme sport, I am not sure. It is quite extreme, but there is no competition about it, unless you compete with your friend about whether you will do it or not.


6. Extreme Ironing

Extreme Ironing is an extreme sport and a performance art. People who play this unusual sport go to a remote location and iron clothes! They call themselves ‘ironists’, and get a thrill from taking their ironing board, unplugged iron and some of their wrinkly clothes to some extreme places and photograph themselves doing it. Such places that they have reached include extreme altitude, underwater, hanging from cliffs, and on top of vehicles. According to the official website, extreme ironing is “the latest danger sport that combines the thrills of an extreme outdoor activity with the satisfaction of a well-pressed shirt.”


5. Wife Carrying Competition

Wife carrying is a sport in which male competitors race while each carrying a female teammate. It is held annually in Finland in early July, and requires a man to negotiate a 253.5 m course while carrying their wife on their back. The course includes various surfaces and getting through dry land and water based obstacles. The prize to the winner is a mobile phone, and more importantly they also win their wife’s weight in beer.


4. World Gurning Contest

A competition where the ugliest face wins. Gurning is apparently a word for pulling a face, and you probably are not surprised to know that there is a World Gurning Contest. Gurning competitions are originated in 1297 at the Egremont Crab Fair, in the UK. It makes sense then that as part of ‘Crab Fair’ in this part of the world they hold face pulling competitions to see who can make the ugliest face.


3. Chess Boxing

Chess boxing is a hybrid sport that combines chess with boxing in alternating rounds. The sport was invented by French artist and filmmaker Enki Bilal in his comic book Froid Équateur in 1992. The first real event of chess-boxing was organized by Dutch artist Iepe Rubingh in 2003. Chess boxing is a fast growing sport. The sport alternates between games of boxing and chess after each round – waiting for a checkmate or knockout to decide the match. A Chess Boxing match between two individuals lasts up to eleven rounds, starting with a four minute chess round and followed by two minutes of boxing.


2. Bossaball

Bossaball is spectacular new and unusual sport invented in Spain by Filip Eyckmans who developed the concept 2004. It is similar to volleyball, but also includes elements of football, gymnastics and capoeira. The game played on a specially designed inflatable court with a circular trampoline on each side of a net. It is a ball game between two teams, each consisting of 3 to 5 players.


1. Nude Sports

There is a lot of interest in people playing sport with no clothes on. Taking off your clothes to play some sports is not recommended, and watching it being played by some people may not be a good idea either. It is a social custom in most parts of the world for athletes to wear some clothing. Today, the main exception is in naturist-organised events, and some other events, such as the World Naked Bike Ride, in which people take part in the nude. There are also some cultures in the tropics today in which sports are played in the nude or partially nude. Some of most popular events in naked sport are the “international Alps Adria Meeting”, “International Nudist Swimming Gala” , “International Naturist Sports Week” , “Roskilde Festival” etc.












Source: I Can't Believe It

9 Unusual Dangerous Foods That Might Harm You

When you think of food you don't think of hazardous, infection or death, but in this post you will see foods that can do just that. There are some products that are so unusual and dangerous that they can fight off any appetite, still people eat it.

9. Kaestur Hakal

Greenland sharks are dangerous not only while sailing to kayaking, but also for the stomach. Greenland shark urinates like crazy when in danger and huge amount of ammonia and trimethylamine oxide excreted through the tissues of sharks. Enterprising residents of Greenland developed a traditional dish known as the "Kæstur hákarl". The smell of shark meat is almost unbearable, the consumer is faced with the potential threat of organ damage, toxicity and disease from the poisons that are still present in the meat. Still people eat it.


8. Kivak

Kivak is extremely heavy on the stomach and a dangerous food. Ancient Icelandic food known as Kivak consists of fermented (in fact, decomposed) carcasses of small seabirds - guillemots and gulls. Birds who get caught in fish nets are seasoned with seal fat and burried in the ground for up to three years. Birds slowly marinate in seal fat in the cold arctic tundra. When its dug out, not only does it look disgusting, but it can be deadly because botulism.

Botulism is rare but sometimes fatal paralytic illness.


7. African Poisonous Bull Frog

African poisonous bull frogs from Namibia. Frog meat comprises potent toxin known as Oshiketakata which can cause kidney failure and death.
Nevertheless, meat frog comprises potent toxin known as Oshiketakata, which can lead to renal failure, muscle damage and even death. Recommendations for handling frogs include their favorites in a pot with special boards which supposedly "neutralize" the toxin. The level of venom is believed to be lower at certain times of the year when food is acceptable for the brave, or perhaps foolhardy, if it comes to handling wooden planks. We can not guarantee that the consumer will not croak


6. Braised Asian Bets

There are some foods which simply defy the imagination. Possibly the most counter intuitive food is Asian Bat soup, which contains an entire bat placed in a soup bowl after boiling with chicken broth. The bat is dissected with a knife and fork, and the broth is then eaten with a spoon, along with the innards of the bat. Hair is present in the dish, along with the membranes of the bat’s wings. The dish is rather delicious, but we are forced to conclude that it is very unappetizing to see an entire bat floating in front of us. The bats are also capable of carrying a number of human transmissible diseases, and the practice is considered unsustainable by many conservation organizations.


5. Octopus Tentacles

It is offered some exotic Japanese and Korean restaurants for Western Tourists seeking something different than sushi. Miniature alive octopuses get cut into two parts and served with some soy sauce. Because the animal is an invertebrate with a partially de-centralized nervous system, the tentacles continue to grap, coil and squeeze as they are consumed. In several unfortunate and eerie cases, death has resulted from the disembodied tentacles conspiring to block the airways of diners.


4. Caviar

Caviar is a popular dish in Russia, and snails are a popular French dish. Extreme entrepreneurs are engaged in the popularization of a new dish, a delicacy known as "cochlear caviar", which consists of raw eggs from land snails. The eggs are served on the hard-boiled quail eggs, or with grilled vegetables and exotic salads. They come neatly packaged in small jars with wonderful seasoning, which carries the taste of fresh earth. Raw snail eggs contain brain parasites, which already killed quite a few extreme food lovers.


3. Snake Burger

Snake Burger made from cobras, rattlesnake and other snake meat can be enjoyed in South-East Asia. Snake meat is perfectly safe but if a chef fails to remove skin from meat correctly toxin will get into the meat.


2. Inner Organs of Animals

The insides of the digestive, reproductive and nervous systems of some animals are placed in the heart of some of the grotesque, but surprisingly popular dishes. A variety of dishes using membrane of the stomach, intestines and even the testicles of cows and sheep. Lamb testicles are among the most popular, and are served breaded in marinated sauce. In Europe, the dish can be served, known as "offal", which is made from pig intestines. Head of sheep and fish eyes also appear in the menu. Risks of fatal infections from parasites led to a number of deaths in European restaurants. Cant say how many deaths this caused in countries where health and safety isnt as important as in European restaurants.


1. Crow Pie

Crow pie is the last dish on the list which is popular in Lithuania. Birds are caught at a fairly young age, fried in oil and then served with a plate of grilled vegetables. Meat is rumored to act as an aphrodisiac.
Concerns have been raised over the possibility of contracting diseases from these scavengers. Crow is not considered Kosher or Halal for these reasons.










Source: I can't Believe It

Amazing Optical Illusions Explained

15. Rotation Snakes

This image is called "Rotating Snakes". Stare at this for a few seconds. Do the circles appear to move? This is a motion illusion- the circles look like they're moving, but they're stationary the whole time.

Motion illusions work by using common geometric shapes that your brain recognizes. Here, the shapes are concentric circles. Because your brain associates the shapes with moving, staring at the concentric circles will make it appear as if they are in motion. If you blink, you'll notice they appear to move faster. If you stare at a fixed point on the image, the circles stop moving.


14. Blivet

A blivet is a paradox. When you look at it from the top, you see two descending rectangular rods. When you look at it from the bottom, you see three ascending circular rods.

A blivet is an impossible object. This means your brain interprets the 2-D object as being 3-D and creates an optical illusion for you. The object is actually made of two rectangular rods. The third cylindrical rod you see is merely the space between the two rectangular rods.


13. Hering Illusion

You see here a central point from which blue lines radiate outwards on two sides. Two red lines are drawn vertically. While the red lines seem to bulge outwards, they are actually straight vertical lines.

The Hering illusion is one of depth perception. The red lines look as if they bulge out in the center. The brain sees the radiating lines originating from the blue point in the center. The blue point is furthest away from the edges, so the brain assumes the center of the line must also be further away in the center. This creates the optical illusion of bulging out in the center.


12. White's Illusion

In White's illusion, there are horizontal black stripes against a white background. On the left side, there is a lighter gray vertical stripe. On the right side, there is a darker gray vertical stripe. These two vertical stripes are actually the exact same shade of gray.

White's illusion tricks the brain into thinking there the lighter gray is brighter and more luminous. This optical illusion is explained by lateral inhibition, where brightness is perceived differently. On the left side, dark photoreceptors detect more light and deactivate, making the gray stripe appear lighter. On the right side, both light and dark photoreceptors are activated. Your brain struggles to make sense of what it sees, and so it perceives the gray stripe as being darker.


11. Zollner Illusion

In the Zollner illusion, there are two sets of lines. Crosses on different lines create angling. Actually, these lines are parallel to each other.

There are a few explanations for this illusion. It uses depth perception to work. The shorter lines are angled so they look as if they are closer to us, the audience, and therefore not parallel to the longer lines. The different angles on the two lines fool the brain into thinking the lines are distorted.


10. Adelson's Checker Shadow Illusion

We have here a checkerboard with dark and light colors. A green cylinder stands on top of the checkerboard and creates a shadow running diagonally across the board. Sounds simple enough. But did you notice that the squares on the checkerboard marked A and B are actually the same shade of gray?

This illusion was created by a Professor Adelson at MIT. The darker colored square A is surrounded by lighter colors which makes it appear lighter. This is called local contrast. The green cylinder casts a shadow across the board making square B that the shadow falls on look very different. Don't believe it? Check the gray values for the colors yourself.


9. Orbison Illusion

In an Orbison illusion, there is an overlapping figure placed on top of a background of either concentric circles or radial lines. Here, there is a quadrilateral that looks distorted and bulging. It's actually a square.

This is actually a square placed on top of the radial lines. The illusion uses the perception of the background. Because the square is placed on top of the background lines, the lines of the square intersect the background and make the square look distorted. Your brain processes the angles differently and distorts the shape.


8. Lilac Chaser

Here, there are 12 purple dots arranged around a central black. The background is gray. Stare at the black cross for at least 30 seconds. Do the purple dots appear to disappear? Did a green disc appear? Now where'd the purple dots go?

The lilac chaser illusion is a visual illusion. The lilac dots appear to move because of apparent movement. Because the dots are spaced evenly and you're staring at the black cross in the middle, your brain perceives movement. The green disc appears by negative afterimage, where an afterimage of color appears because you're staring at the same point of color for so long. Staring at the same point also causes Troxler fading, where a blurry object on the periphery fades.


7. Kanizsa Triangle

The Kanizsa triangle makes it appear as though there is a white equilateral triangle drawn on top of a second equilateral triangle. Three black circles in a pacman-shape outside of the triangle form the points of the bright triangle.

The Kanizsa triangle was created by Gaetano Kanizsa. This type of optical illusion uses subjective contours, which create the illusion of sharp edges. The white triangle also appears brighter than the background. The darker pacman-shaped circles show a color contrast that makes the triangle appears more luminescent. Illusory contours by the circles create the illusion of the edges of the triangle.


6. Frasier Spiral Illusion

You might be wondering why this is included. The black cords against a checkerboard background obviously form a spiral, right? Well, you'd be wrong. This is actually not a spiral.

The Frasier Spiral illusion is also known as the twisted cord illusion. This optical illusion works by playing on retinal perception. It appears as if the black cords are spiraling, but these are actually concentric circles. The black circles are combined with white twists to create a false spiral. The illusion is furthered by the misalignment in the background, where there is a checkerboard pattern.


5. Ebbinghaus Illusion

Here, you see two groups of circles. One shows larger blue circles surrounding a small orange circle. The other one shows a large orange circle surrounded by small blue circles. Ready to have your mind blown? The orange circles are actually the same size.

This is known as the Ebbinghaus illusion. This optical illusion works by using relative size perception. Your brain interprets the orange circle on the left as small because it's surrounded by larger circles. The orange circle on the right looks bigger because it's surrounded by small circles. Your brain tricks you into thinking the orange circles are of different sizes. Try measuring them if you're still skeptical.


4. Bezold Effect

This picture represents the Bezold Effect. One side shows a lighter red that's striped with white while the other side is a darker red striped with black. Guess what? Both of these are the same shade of red.

Why do these two shades of red look so different? This is called the Bezold Effect. Wilhelm von Bezold discovered that color is interpreted by the brain differently when it is associated with different colors. Because the red on the left side is alternated with white, your brain sees it as a lighter shade of red. The black stripes on the right side make that red look darker.


3. Cafe Wall Illusion

This is another classical illusion you've probably seen before. There are lines of alternating black and white "bricks" separated by a line of gray "mortar". Looks crooked, right? Wrong. These are actually parallel straight, horizontal lines.

This was first observed by Dr. Richard Gregory when he was looking at tiles on a cafe wall. The parallel lines look bent because of the position of the squares. For it to work, the black squares cannot be completely lined up. When the squares are laid irregularly, it gives the appearance of sloping lines.


2. Hermann Grid Illusion

This grid illusion is known as the Hermann Grid Illusion. There are black squares arranged in a grid against a white background. Look at the intersection between the squares. Do you see a gray dot?

You see gray blobs at the intersections of the black squares when it is actually a white background. This is because of a phenomenon in the retina of the eye called lateral inhibition. The ganglion cells use photoreceptors to process what it is seeing. The area at the intersection, called the receptive field, is small. Because the intensity of black color around the intersection is high, the intersection itself appears darker- a gray color.


1. Mobius Strip

A Mobius Strip is one of the simplest optical illusions. It's also one of the most mystifying. What results is a simple strip that only has one edge and one surface. There is no discernible "front" or "back" side. So how is this created from a strip of paper that had two sides?

To make a Mobius strip, you take a strip of paper, add a half-twist then tape the ends together. This has the mathematical property of being non-orientable and has non- Euclidean geometry. Although this seems to have multiple surfaces when you look at it, all you have to do is take a pencil and trace a line across the strip. You'll see that not once does the line go on a different "side" of the strip.









Source: Likes

10 Animals You Probably Didn't Know Existed

10. Tufted Deers

They are small species of deer that are found in China. They are mainly solitary creatures, sometimes found in pairs, and they are very shy. Also, majestic fangs.


9. Star-Nosed Moles

They are small moles found in eastern Canada and United States along wet and low areas.


8. Southern Right Whale Dolphin

They are small species found in cool waters far south. They have no visible teeth or dorsal fin but they still leap out of the water gorgeously.


7. Raccoon Dogs (Tanuki)

They are found in East Asia. They are not actually a type of raccoons, but they climb trees regularly.


6. Patagonian Maras

They are large rodents found in parts of Argentina. They are herbivorous and cute.


5. Markhors

They are large species of wild goats that are found in Afghanistan and Pakistan. They are classified as endagered species by the IUCN since there are only 2,500 mature markhors in existence.


4. Maned Wolves

They are found in South America. They live mostly in grasslands.


3. Lampreys

They are the spawn of hell. Kidding. They are jaw less fish that suck the blood of fish, or humans, and their body hasn't changed since 300 million years ago.


2. Gerenuks

They are long-necked species of antelopes found in Eastern Africa. They stand up to graze for food. Very picky eaters!


1. Amazonian Royal Flycatchers

They are found in the Amazon. They are about 6 inches and they mostly eat insects.







Source: I can't believe it

Unbelievable Real Clouds

15. Lenticular Clouds

We think these clouds look like delicious wisps of marshmallow! But did you know that this type of cloud is also often mistaken as a UFO? Due to their often saucer-like shape, some people tend to jump to the wrong conclusion!

So how are Lenticular clouds formed? They are formed when a current of moist air is forced upwards as it travels over a mountain, causing the moisture to condense and form a cloud. Lenticular clouds also tend to hang around in the same stationary position for days. This is because the flow of moist air continually resupplies the cloud with the moisture it needs to retain its position and shape.

It is also interesting that this lenticular cloud is hovering over these large fans. It is these large fans that are able to supply a constant flow of air to the cloud.


14. Anvil Clouds

You’d be forgiven for looking at this photograph and thinking it had captured an explosion going off. This photograph actually shows an anvil cloud, and they are often associated with the loud explosion-like noise of thunder because the cloud forms in the upper part of a thunderstorm.

Even if a thunderstorm is miles away, lightning can still strike from these gloomy looking anvil clouds. The National Weather Service state that anvil clouds can spread up to “hundreds of miles downwind from the thunderstorm itself”.

So how do anvil clouds form such an unusual shape, you ask? Rising air in a thunderstorm spreads out and expands as it clashes against the bottom of the stratosphere. Because anvil clouds mostly contain ice particles, the air in the stratosphere is warmer than that contained in the cloud. As a result, the anvil cloud is prevented from spreading into the stratosphere and it maintains a flat-looking top.

The white streaks falling out of the edges of the anvil cloud is actually snow, however by the time this snow reaches the earth’s surface, it has been transformed into rain.


13. Cirrus Kelvin-Helmholtz Clouds

Notice how these clouds look like a giant wave in the sky? These clouds are called Cirrus Kelvin-Helmholtz clouds, and they are one of the most distinctive cloud formations. These clouds often sit at heights above 16,500 feet – Yikes! If you see one of these clouds, it’s best to pause for a moment and admire it, because only within a minute or two of forming, this type of cloud often disperses again.

How does this cloud get its unique wavy shape? The answer is quite simple actually. When one layer of air slides across another layer moving at a different speed or in a different direction then the cloud forms the wavy shapes as pictured below. These types of clouds are not associated with any specific weather conditions, and therefore can form on even the most sunniest of days.


12. Fallstreak Hole

We find this photograph of a Fallstreak Hole cloud fascinating! It almost looks as though the sky is beginning to cave in. Fallstreak Holes, also known as ‘hole-punch clouds’, occur when part of a cloud of water droplets freezes into ice crystals. Sometimes the ice crystals grow large enough to fall below the clouds, and this results in a Fallstreak Hole type cloud as pictured.

Another amazing fact about this type of cloud is that the hole grows in size, sometimes reaching 50km across merely an hour after the hole began! For the hole to form, the droplets in the cloud layer need to be below 0˚ Celsius, but not necessarily frozen.

The tiny water droplets need temperatures as low as –40˚ Celsius in order to freeze into solid ice crystals. We will definitely be looking out for this unique type of cloud from now on!


11. Mammatus Clouds

Look at these fascinating, circular clouds poking through the sky’s surface! This type of cloud is called a Mammatus cloud. They are a rare sight to see, and are an example of clouds in sinking air.

There is a common misconception that Mammatus clouds are a sign that a tornado is about to form, however this has been proven incorrect. Instead, Mammatus clouds signal that the worst part of a thunderstorm has actually passed. These clouds are linked to the anvil cloud, as Mammatus typically develop on the underside of a thunderstorm's anvil.

When sunlight reflects off the underside of the Mammatus cloud, as pictured, it is a beautiful sight. Mammatus clouds can occur for a long period of time if the sinking air contains large drops and snow crystals, as these take longer to dissolve and evaporate.


10. Polar Stratospheric Cloud

We find the neon ring around these clouds fascinating! Just look at those bright and beautiful colors. Polar stratospheric clouds are also known as nacreous clouds, and this is named after nacre, meaning ‘mother of pearl’. The cloud is known as ‘mother of pearl’ due to its iridescent nature.

Polar stratospheric clouds occur in the polar stratospheres at altitudes ranging from 15,000–25,000 meters. Although the stratosphere has very dry conditions, in extremely cold polar winters, stratospheric clouds such as the polar stratospheric cloud is able to form due to the colder, and therefore more moist conditions during this time. Did you know that this is also another type of cloud often mistaken for a UFO? This is mainly due to their shiny nature and their often flat shape.


9. Roll Clouds

How wonderful are these tubes of cloud in the sky? Appropriately named a roll cloud, these types of clouds are extremely rare. A roll cloud is a low, horizontal, tube-shaped cloud. Do not fear however, because contrary to popular belief, these types of clouds do not have anything to do with tornadoes!

Roll clouds appear as though they are rolling in the sky, however they are a solitary cloud known as a soliton. A soliton is simply a wave that has a single crest and moves without changing speed or shape.

If you travel to Queensland, Australia, you have a very good chance of seeing an example of a roll cloud. Famously known as the Morning Glory cloud, this popular occurrence is due to the sea breezes that develop over the Cape York Peninsula and the Gulf of Carpentaria.


8. Undulatus Asperatus

Just look at those lovely, bright sunset colors! The Undulatus asperatus cloud is a newly recognised and rare cloud formation that was discovered and named as recently as 2009. This was a pretty big deal for weather experts and scientists, as a new cloud formation had not been discovered since 1951!

Undulatus asperatus simply means agitated waves. These types of clouds may look stormy and dark, however they can sometimes appear and disappear without a storm occurring. These clouds have become common occurrences in the Plains states of the United States during the earlier hours of the day. Due to the recent discovery of these clouds, scientists are still trying to discover more information about these clouds.


7. Cirrus Kelvin-Helmholtz Clouds

As mentioned earlier, this is because layers of air form these clouds, however they just as easily destroy them too. But how did this strange cloud formation get its name? This type of cloud was first described in the late nineteenth century by Scottish physicist Baron Kelvin (1824-1907 and German physicist Hermann von Helmholtz (1821-94). The title of the cloud combines both men’s last names, linking back to the cloud’s origins.

Many of us have most likely never seen this type of cloud before, but there is an understandable explanation for this. Weather experts claim that there is usually “insufficient moisture present to generate cloud and render the pattern visible”. These clouds do occur commonly in the upper troposphere, however these often remain invisible to the human eye.


6. Fallstreak Hole

Here is another type of fallstreak hole, however you will notice it is quite different to the previous one. This photograph of a fallstreak hole has been taken from a position almost directly underneath the cloud.

On the other hand, the first fallstreak hole photograph was taken from more of a side-on position much further away in the distance. Did you know that scientists believe that aircraft can also cause this type of cloud to form? They believe that when the aircraft is flying through the clouds, the expansion of the air as it passes over the aircraft wings could sometimes be cool enough to set off the freezing process of the tiny droplets of water.

It is once these droplets of water freeze that they begin to drop through the surface of the cloud and create this fallstreak hole effect. Who ever knew clouds could be so fascinating? Now you know next time you see this ominous-looking cloud that the sky isn’t really falling in.


5. Lenticular Clouds

How amazing is this photograph? We have never seen such a fascinating sight in our lives! This cloud is another example of a lenticular cloud.

As you can see, they often occur around mountains or hills. Due to their often rare locations, lenticular clouds are rare to see. Photographers especially look out for this type of cloud during sunset, as a brilliant array of colors fill the cloud and create a beautiful display.

The shape of this type of cloud often depends on the wind speed and the shape of the mountains. Lenticular clouds can remain in their position for hours, or even days. So although they are a rare sight, if you do see one then you can be assured that it will remain there for quite some time.


4. Mammatus Clouds

This photograph is a great example of mammatus clouds occurring after a thunderstorm over a cityscape. This is a rare and wonderful sight, and you can also see an example of the sun reflecting off the clouds.

But how do mammatus clouds form this unusual shape? Because of the cloud’s high concentration of ice crystals and water droplets, the saturated air is heavier than the surrounding air and it therefore sinks back towards the earth. The sinking air will be cooler than its surroundings and continues to sink downward, creating the rounded formations of cloud as shown in the below photograph.

Although mammatus clouds can last for long periods of time, over time, the cloud droplets do eventually evaporate and the cloud formation will disappear.


3. Polar Stratospheric Cloud

Here is another beautiful example of a Polar Stratospheric Cloud, but when is the best time to spot one of these amazing cloud formations? These clouds are best observed when during twilight when the sun is between 1 and 6 degrees below the horizon.

Although they might be quite specific measurements, it’s best to always keep an eye out for unusual and colourful cloud formations because you never know what rare type of cloud you’ll discover!

Did you know that Polar Stratospheric Clouds are often linked to holes in the ozone layer? Scientists exclaim that this is because the clouds “support chemical reactions that produce active chlorine which catalyzes ozone destruction, and also because they remove gaseous nitric acid, perturbing nitrogen and chlorine cycles in a way which increases ozone destruction”.

Because these clouds sit at higher altitudes and because of the natural curve of the Earth’s surface, these clouds receive sunlight from below the horizon. This creates the amazing glow as seen as in this photograph.


2. Roll Clouds


Here is another awesome example of a roll wave, and this one looks like a giant tunnel in the sky! So exactly how are these incredible cloud formations developed? Scientists explain that roll clouds are usually formed by outflows of cold air from sea breezes or cold fronts in the absence of thunderstorms.

Roll clouds are sometimes likened to a similar type of cloud known as the shelf cloud. However, unlike shelf clouds, roll clouds are completely detached from other cloud features. You can see in this photograph how the roll cloud is a formation all on its own, and it does not contain other cloud formations attached to it. This makes the roll cloud a spectacular sight in the sky, and they often look like a very smooth cylinder.

This type of cloud is often located along the gust front, and this is another reason why it has such a tubular shape.


1. Undalatus Asperatus

Here is another example of a fascinating Undulatus Asperatus cloud. You’ll notice its almost ominous appearance, and this is because some Undulatus Asperatus clouds can also appear in the hours following thunderstorm activity. The cause of these types of clouds is presently unknown, and scientists believe that they are quite unusual atmospheric structures.

Although most low cloud decks are have a flat bottom, Asperatus clouds appear to have large vertical structure underneath. Undulatus Asperatus clouds have been linked to both lenticular clouds and Mammatus clouds.

Scientists believe the cloud formation has similarities with lenticular clouds because of their ability to form around mountains, and Mammatus clouds because of their link to thunderstorms. They have even been associated at time with a type of dry downward wind that flows off mountains!





Source: Likes