Fact

factday#22

Posted on Updated on

One simple question : How many stars can you see from naked eye in a clear sky ?

image

Its 2137 .
Your answer might be infinite.
And I am glad to tell you that you are absolutely wrong.

People around the world have no idea where science have reached and the above question is one of such example.
Question is an example heard first time. Alright let me explain the fact.

Answer of the above question is 2137, a human can only see 2137 stars from naked eyes in clear sky.
After discovering the range and possible visible spectrum of human eye scientists calculated that there are only approx. 8548 stars visible to human eye from the earth surface.
Now as we all know that earth is a sphere.

image

This means only 4274 stars are visible from each northern and southern hemisphere.
A human can only be at one half of that one hemisphere. This results in 2137 stars from any point on earth.
Now you do know the answer and reason.
So next time whenever you’ll be asked the same question.
Give them a valid answer with a solid reason.

image


DO GOOD HAVE GOOD.

– eustat

factday#21

Posted on Updated on

If I’ll say that you are 99.99999% empty . You may not believe it.

But I can prove that –

image

The elements we just referred to are composed of atoms, and those atoms make up your entire body. One percent of every atom is composed of protons, neutrons, and electrons. The other 99.9% is empty space.

image

To put this in perspective, imagine at atom the size of a football stadium. Place an orange in the center to represent the approximate size of the nucleus. You would then place pinheads around the stadium to act as electrons. These are the building blocks of our world and yet they contain very little substance.

In fact, if the space was eliminated and the matter condensed the entire human race would fit in a sugar cube.

image


DO GOOD HAVE GOOD.

– eustat

factday#12

Posted on Updated on

Did you know that, when dropped from the same height, a hardened glass ball will actually bounce higher than a rubber ball of the same size?
It’s true!
When you drop a ball on a surface, it compresses and squashes slightly, before snapping back to its original shape. Since glass snaps back much faster than rubber, the glass ball will bounce higher, especially when dropped on another very hard surface, like steel.
Same thing will happen with steel ball too.

image

The key is stored energy. Since hardened steel is usually created with carbon, the steel’s natural atomic crystalline tendencies are countered, causing the ball to deform only briefly. This stores a great deal of collision energy in the process, giving the ball its spring.
In addition, a solid glass ball will also bounce higher than a rubber ball, but then the trick is finding a surface hard enough to make the ball bounce, but not hard enough to break it.

follow eustat and stay updated
– eustat