About 600 million tons of hydrogen are consumed by the sun every second to produce helium. As a result of this process, 25% of the sun consist of Helium.
The melting point of ice is reduced when a pressure is exerted. As the skater slides, his body exerts a pressure on the thin blade, thus creating a small film or layer of water under the blade by melting the ice. The water between the blade and the ice is what they actually glide across. When they stop exerting pressure, that water freezes almost instantly due to the cold temperature.
Why do ice skaters wear shoes with special sharp blades attached to the bottom?
Camels are a type of mammals that are amazingly adapted to the desert.They have two rows of thick eyelashes to protect their eyes from the desert dust. They are also able to close their nostrils to keep out the dust.
Have you ever hit the inside of your elbow in just the right spot and felt a tingling kind of a dull pain?
Running down the inside part of your elbow is a nerve that is connected to your fourth and fifth fingers and activates many of the muscles in your hand.You get that weird feeling when this nerve is bumped against the long bone that starts at your elbow and goes up to your shoulder.
Titan is one of the moons of Planet Saturn.It is said that on titan, the atmosphere is so thick and the gravity is so low that humans could fly through it by flapping ”wings” attached to their arms.
Swinging arms when walking reduces the angular momentum of the body, balancing the rotational motion produced during walking.Although such motion of arms is not essential for walking, recent studies point that arm swing improves the stability and energy efficiency in human locomotion.
Why Do We Swing Our Arms back and forth When We Walk?
Chlorine bleach works on clothes to remove stains. However, the chlorine does not really remove the stain. The stains are caused due to chromophores. Bleach reacts with water and produces oxygen.
This oxygen oxidizes the bonds of the chromophores, breaking them and taking away the its’ ability to absorb light which will make the stain disappear.
If you tap a web of a daddy-long-legs spider, it will shake rapidly for some time.Do you know that this is one of its defense mechanisms?
If it shakes fast enough, it turns into a blur and can be hard for enemies to see which will save itself from being hunted.
If you don’t brush your teeth regularly, you probably have a biofilm of bacteria 300 to 500 cells thick on the surface of your teeth.
Cockroaches have bulky bodies which are only supported by 6 long thin legs, As they die, they lose muscle-control
causing the leg muscles to contract. As a result, the legs are forced to be pulled beneath the body ,causing them to lose their balance, and topple over.
Most of the times dead cockroaches are seen lying on their backs. Do you know the reason for this ?
Have you ever accidentally eaten some chilli and tried to remove its hotness? Next time,Try eating a little butter or cream, and keep it on your tongue for some time. Oils and fats that are hydrophobic substances will dissolve the capsaicin contained in the chilli and remove it from the receptors in your tongue faster than water does.
Your lips contain a protein named collagen, when you get older, this protein is produced less. Which is why your lips get thinner as you age.
The basic requirements for seed germination are moisture, optimal temperature and air(oxygen). The fruit cavity of the Papaya fruit contains enough moisture and air.If the fruit is exposed to required temperature inside,in a warmer climate, seeds start germinating .Light is not required for germination.
Listen to this incident. Once a ripened papaya fruit was cut open by a child. He was amazed to see that some of its seeds had sprouted.
Can you explain how this could’ve happened?
Do you know that Carbon monoxide can kill a person in less than 15 minutes. when you breathe in carbon monoxide, it enters your lungs and binds to the haemoglobin in your red blood cells. The problem is that haemoglobin binds to carbon monoxide over oxygen, so as the level of carbon monoxide increases, the amount of oxygen your blood carries to your cells decreases. Eventually, blood loses all of its ability to transport oxygen, and the person would die.
Ever wondered how dolphins, being mammals living in the ocean nurse from their mothers after birth? They are able to roll their tongue like a straw. They even have little finger-like projections on the sides of their tongue that act like a zipper. These keeps mom’s milk in the calf’s mouth and keeps salt water out. Also dolphin milk has a very high viscosity making it easier for them to drink under water .
A sponge is a common tool used in many cleaning activities. Do you know what makes it absorb well? A sponge is made of loose fibers that create a product that is more empty space. .Surface tension draws the water into the sponge, while water’s bonding properties hold the water in the sponge.
A bats’ hind legs are so small and underdeveloped that they can’t run to build up the necessary take off speed to launch into the air from the ground like birds. Also, their wings don’t produce enough lift to take off from a dead stop, so, they use their front claws to climb to a high spot, and then fall into flight. Hanging upside down is also a great way for them to hide from danger.