How do geckos stick upside down?

 Geckos has the ability to scale smooth surfaces​—even skittering across a smooth ceiling—​without slipping! How does this amazing little lizard do it?

Geckos can stick to surfaces because their bulbous toes are covered in hundreds of tiny microscopic hairs called setae.Each seta splits off into hundreds of even smaller bristles called spatulae. Scientists already knew that the tufts of tiny hairs get so close to the contours in walls and ceilings that the vander-waals force.

Each toe of the gecko contains ridges that have thousands of hairlike protrusions. Each protrusion, in turn, has hundreds of microscopic filament  s. The intermolecular forces (called van der Waals forces) that emanate from these filaments are sufficient to hold the lizard’s weight​—even when it is scurrying upside down along a glass surface!

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How the electric eel generate voltage

 

Electric eels are generate electricity in their tail muscles. When they flex certain muscles, they create an electric potential between the anterior and posterior parts of their tail. The anterior part of the tail is positive and the posterior part of the tail is negative.

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How a transformer works

 

Transformer is an electrical static device which works on the principle of mutual induction. It transforms electrical energy from one circuit to the other circuit, keeping its power, and frequency same at input and output side.

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How do solar panels works?

The annual increasing rates of global warming and carbon emission has opened up a the revolution of a cleaner energy. Thanks to advanced research on the theory and concepts of semiconductors, we can now efficiently utilize energy from our earth's longtime neighbor the sun. It was proven that the amount of energy released by the sun in just a second, is capable of powering the whole of the united states for about 9 million years.

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How the cat whiskers function

 

Their whiskers help guide the cat in the dark. Many people say cats are nocturnal but, they aren’t. When something touches a cats whisker, it sends a signal to the brain telling the cat that there is something there. I have seen too many people cut a cat’s whisker off because they grew too long. Even though the whisker is made of nerves, they won’t feel pain from cutting it off, but that doesn’t mean you should cut it off because it is vital for guiding the cat. Once the cat has used it’s whiskers to guide itself around the house, they will then remember the layout of the house and won’t need to rely on whiskers to walk around in the dark. Whiskers also explain why blind cats find their way around the house so easily.

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How radio frequency works

 

Radio waves are electromagnetic waves that include light, microwaves, x-rays, infrared, ultraviolet, etc. Radio waves are composed of both electric fields and magnetic fields. In fact, a wave is produced when a time-changing electric field induces a time-changing magnetic field and then the time-changing magnetic field induces another time-changing electric field and the process repeats. This is all described by a set of equations modified and assembled by James Clerk Maxwell, so today they are called Maxwell’s equations.

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How a capacitor works

 

A capacitor or condenser is an electrical device capable of storing electrical charge. In a way, a capacitor is a little like a battery. Although they work in completely different ways, capacitors and batteries both store electrical energy

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How lead acid batteries work

 

The lead–acid battery was invented in 1859 by French physicist Gaston Plante and is the oldest type of rechargeable battery. Despite having a very low energy-to-weight ratio and a low energy-to-volume ratio, its ability to supply high surge currents means that the cells have a relatively large power-to-weight ratio.

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