Why do our clothes appear darker when they get wet?

  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...

What are sunspots?

 What are sunspots?

Hi guys,
I hope you all will be fine and enjoying.Today in this we are going to know about sunspots.
Let's start......

Visible features on the sun's surface, sunspots are dark regions on the photosphere where a particular strong portion of the sun's magnetic field has slowed the gas that is rising to the surface.

The centre of a sunspot, depressed a little below the level of the surrounding gas, exhibits a lower temperature than the surrounding photosphere, creating a visible spot.

Sunspots can measure up to several times Earth's diameter. Their activity increases and decreases in an 11 year cycle. Early in each cycle, most sunspots appear near the sun's 30°N and 30°S latitude. Later in the cycle, they occure closer to its equator. During the low point in the cycle, called the solar minimum, the sun goes for days or even weeks without flaring.

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