WHY?

Why?

1. Why Aero planes are white?

Not every but most of the commercial aero planes are white, first and the most obvious reason is its ability to reflect sunlight, compared to dark color which observes the sunlight which can increase the temperature inside the aero plane. White minimise the heat and solar radiation.

The next reason can be money. It`s cheaper to paint white rather than painting any other color. Every plane starts with white, which means an additional layer of paint will add more not only weight on aero plane but on money too. More weight means more fuel burn, adding more cost.

Also when there is damage in the plane or any crash, white color makes them visible more easily as compared to any other colors.

2. Why space is dark?

To figure out why space is dark, we should presumably explain why earth has so much light and color. Our earth is encircled by an atmosphere, full of dirt, dust, gases and water driblets - which all act as a small mirror and reflect the sunlight.

When light from the sun hits any of these objects it scatters or bounces out and causes us to be suitable to see the different colors.

 

It is our atmosphere that gives us the capability to see the light and the colors. The colors that we observe smatter to let us see the blue sky and the gorgeous tones of a sunrise or sunset.

But if we go to the moon where there is no atmosphere, the sky will be black, indeed though it`s day time. The same goes with space. It has no atmosphere with motes to reflect sunlight. 

Space is empty, that`s why indeed when the sun is shining, space is dark. If the earth`s atmosphere disappears, it would be as dark as in space or the moon.

3. If men don`t breastfeed, Why do men have nipples?

Men have nipples because nipples develop in the womb before embryos are distinctly male or female. So by the time, a Y chromosome kicks in to distinguish a fetus as male, the nipples have earlier seized their places.

Also, Nipples respond to sexual incentives in both sexes. Institutes suggest that stimulation of the nipples can activate the same joy centers of the brain as stimulation of the genitalia, and therefore they can also play a role in sexual pleasure.

4. Why does milk overflow when boiled while water does not?

When milk is boiled, the water/ moisture in it becomes vapor. But it is trapped under the top creamy layer of milk. So, the vapor tries to push out, spilling out the milk. In case of boiling water, vapor freely evaporates.