Why do our clothes appear darker when they get wet?

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  Why do our clothes appear darker when they get wet? Hi guys, I hope you all will be fine and enjoying. Today in this post we are going to know why do our clothes appear darker when they get wet. So, Let's start.... Any cloth is made from a yarn or fibre. That fibre in turn made of smaller micro-fibre. Some of the photons of light are absorbed but some are reflected and land on our retina and that gives us the sensation of seeing the cloth as having a certain level of brightness.  But when the cloth gets wet the water fills in the gaps between each individual microfiber or yarn. When light falls on the wet cloth, some of it is now more likely to enter the water and be bent away from our eyes. So, some of the light that would have previously been reflected off the cloth back to our eyes is now bent away. Fewer photons of light get back to our eyeball and so the wet cloth appears darker than the dry cloth. But as the water gradually evaporated more and more light is reflected b...
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Why Do You Need Leap Years??

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 Why Do You Need Leap Years??

Hi guys,

I hope you all will be fine and enjoying.Today in this post we are going to explore resons Why Do You Need Leap Years??

Let's start....

Since it takes Earth approximately 365 1/4 days to orbit the sun, an extra day's worth of time accumulates every four years. In leap year, February receives an extra day to compensate for the difference between the astronomical year and the calendar year.

If no adjustment were made, the calendar and the season would drift apart by 24 days every 100 years. The plan of adding a day every four years was devised by the Egyptians. The Romans created a standard leap day, February 29, in 46B.C.

Adding one day per four years didn't perfectly correct the problem, however, because Earth orbits in 11 minutes 14 seconds less than 365 1/4 days. A correction, established in 1582, adds a leap day only to century years divisible by 400. Thus 2000 was a leap year, but 2100, 2200, and 2300 will not be.

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