ЁЯдФ *How ……..* тБЙ
How do we measure the distances to things in space?
Astronomers estimate the distance of nearby objects in space by using a method called stellar parallax, or trigonometric parallax. Simply put, they measure a star’s apparent movement against the background of more distant stars as Earth revolves around the sun.
ЁЯШ│WhyтЭУтЭУтЭУ
Why school buses are yellow in colour ЁЯЪМ
Even when you are looking straight ahead, you can see a yellow object that is not in front of you “in the corners of your eyes” much sooner than any other color even red.
Scientists describe this as follows: “Lateral peripheral vision for detecting yellows is 1.24 times greater than for red. Yellow is more visible to the human eye under dimmer conditions also.
That’s why the school bus is painted with yellow so that the possibility of accidents on the highway will be less and children can reach their home safely.ЁЯЪНЁЯЪМ
GK TODAY
A day on the Moon is 27.32 Earth days or 655.72 hours long
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Ch. Naveen Kumar |
