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What is the light


Visible light is part of the electromagnetic spectrum extending from 700 nm wavelength, up to 400 nm wavelength, in other words visible light is a part of the electromagnetic wave that is generated and has all wavelengths.
There are many attempts to measure the speed of light throughout history. It is logical and logical to think of the law of speed, which states that it is equal to distance divided by time, but with light, it is not that simple, it is very fast, Which is equal to (299,792,458 m / s).

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How to Determine the Age of a Parrot

In most parrots, if there is a line or strip between the head and the skin cap, the parrot is less than 3-4 months old. If there is no bar in this location, it means that the parrot has changed its feathers at least once. More than 3-4 months. Some parrot birds can not apply this test to determine their age, namely lutino birds, and the parrot (Albino) which has no feather marks due to a genetic mutation.
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Where is the Bermuda Triangle?

The Bermuda Triangle is a hypothetical patch of ocean waters off the coast of North America, in the far north of the Atlantic. In fact, there is no actual agreement on the size, location or shape of the Bermuda Triangle. It is an imaginary territory, not defined by geographic or geological topography, but generally the most acceptable boundary is an unclear triangle, whose heads are at three points: Florida, the Greater Antilles (the most important tropical archipelago is Cuba), and the Bermuda Islands (a small archipelago administratively administered by Britain).
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