Why is, looking back and forth at distant objects and closer objects considered a good practice for healthy eyes? Inbox your answers and be the winner of this week
Isn’t it remarkable that, Electric eels can produce electric shocks, which are strong enough to knock down a horse with the help of the electric organs that are located in their tails?
Isn’t it wonderful that sea otters hold each others hands while they sleep to keep them from drifting apart from their raft?
Did you know that the deafening sound that comes from a whip is due to the tip of the whip traveling faster than sound, causing a sonic boom?
For an object to appear white, it should reflect all the colours in the colour spectrum equally. Similarly, for an object to appear colourless, it should let all the colours pass through it without reflecting. An ice cube is one single unbroken unit and it lets light pass through it without reflecting. Unlike ice, snow is made out of thousands of tiny ice crystals with air trapped in between them which causes the white light to reflect many times, making the snow appear white.
Ice and snow are both frozen water. But ice is colourless while snow appears to be white. Explain why.
Have you pondered on how a gecko sticks to a wall so easily, defying the laws of gravity? There are tiny hairs on geckos’ feet to help maximize the contact with surfaces, allowing van der Waals forces to form and bind them to the walls.
Have you ever wondered how to distinguish a fresh egg from a stale one? A fresh egg would sink in the water. The latter, however, would float.
Wouldn’t you be amazed if you hear that a Cricket’s ears are located in its front feet, just below its knees? Well, it’s true! There are openings in their exoskeleton which act as such, leading into hollows inside the legs.
When clothes are dried in the sunlight, a process called photolysis takes place. In photolysis, a chemical compound is broken down by photons. These photons come mostly from the UV rays in the sunlight. Likewise, the compounds that cause odors in clothes are broken down when dried in the sunlight causing them to smell better than the ones dried indoors. Also, if the moisture in indoors is high, it gives a significant chance for fungi to grow on clothing, making them smell bad.
Why do the clothes that are dried outside in the sunlight smell better than the ones dried indoors?
Usually a woodpecker drums on a tree bark more than 22 times per second. Have you ever wondered how they continuously do this without damaging their heads? There is an area of spongy bone in a woodpecker’s skull and also fluids inside its head that interact to absorb these vibrations and protect its head from any damages.
Have you ever wondered how people walk on fire without burning their feet? Even though a very high temperature is present in the inner parts of the embers, the heat takes long time to get transmitted to its outer surface and also the amount of time the foot is in contact with the ground is not enough to induce a burn.
Human babies are born toothless, grow a set of milk teeth as they grow older, and finally lose these as they grow permanent adult teeth.It’s a wonderful thing that baby elephants too born without tusks, eventually grow temporary tusks (milk tusks), and replaced these with permanent tusks just like humans.
Did you know that propane gas which can be used as an alternate for fossil fuel can be produced with the help of a tiny bacteria?Latest researches have proved that E -coli bacteria can turn fatty acids into propane gas.
Migratory birds are sensitive to even the tiny changes in the strength of the magnetic field. The earth’s magnetic field becomes stronger as you travel away from the equator and towards the poles. Migratory birds can estimate their locations as well as north and south poles of the earth through minor changes of the magnetic field.So they can detect the correct path while migrating.
Have you heard that some birds fly for more than thousand kilometers seeking for warmer places before winter season arrives? Do you know how they identify the correct direction to their destination properly?
Do you know why insects like bees & butterflies used to drink tears of crocodiles without drinking pure water from natural water ways? That’s because the tears of crocodiles contain large amount of minerals & rare nutrients which are essential for them.