What 3 things can light do?

Answer 1

While not the only mechanism of producers at the bottom of food chains, photosynthesis depends on light to turn inorganic carbon dioxide and water into glucose and therefore all the derivatives such as celulose, etc. Animal life as is would probably not exist if there were no light.

Light radiation can also heat up the planet, infra-red trapped in the atmosphere makes this planet livable.

Humans can only synthesis Vitamin D when exposed to light. It's something that "broke" in our evolutionary history (chimps don't have this problem), making us even more dependant on light.

Many animals rely heavily on sight.

It helps regulate circadian rhythms in most cases. When to go to sleep, wake up, eat, etc.

Some insects such as some moths navigate based on the position of a night light source, the moon.

Essentially, most animals evolved during millions of years in environments that have day and night cycles, and some are more dependant on it than others.

Answer 2

Visible light is all around us. We cannot stop it. The sun sends us visible rays every millisecond. Imagine life without any light. We wouldn't be able to see anything. We wouldn't be able to make a light bulb because we wouldn't be able to manufacture the materials because we can't see. The purpose of visible light is so organisms with eyes can see, as the visible light is reflected from objects to our eyes and that's how we see.

Answer 3

Visible light was invented in order to make it possible for human beings to see

things in our daily life. The frequencies and wavelengths of visible light were

carefully selected to match the range of sensitivity of the average human eye.

Also, the colors were distributed throughout that range so that they could be

seen individually and not bunch up all at the same place in the visible spectrum.

Before (prior to) the international meeting of standards and technlogy that got

together and set up the whole system, every city and country had its own local

system. Several of them were very different from each other, which was really

inconvenient. When traveling from one place to another place, it often happened

that everything could go black and could not be seen, so during those times of

history people never traveled very far from where they had lived and grew up.

Technology was also very limited and nothing much got invented. There was no

driving and there was no airplanes because cars and flying were too dangerous at

high speeds if the light became not visible and the drivers could not see things. So

all travel stayed pretty much on animals since they could not go fast, and also they

could occasionally see something that was invisible to the driver and avoid it.

People knew for a long time how hard this system was, and they knew that it

should be changed. For many centuries they tried to have the speed of light

reduced so that people could react to things before it was too late, but this

movement was never successful. Finally the international meeting of standards

and technology to which I mentioned to up above got together in a neutral place

and created the standards of visible light that everybody takes for granted today.

The End.

Respectfully handed in, and I hope you give me a good grade on this report

since I really worked hard to look it up.

Answer 4

To help plants to produce their food i.e (Photosynthesis)

Answer 5

A light bulb turns electricity into visible illumination, usually by heating a filament or gas within the bulb.

Answer 6

shine, luminate and be bright! haha

. light when it stricks an object will refract, reflect and transmitt.