🤔 How …….. ⁉
How does an air balloon works ?
Hot air ballooning is the oldest form of aviation. First flight was 1783.
Hot air balloons work because hot air rises. By heating the air inside the balloon with the burner, it becomes lighter than the cooler air on the outside.
This causes the balloon to float upwards. if the air is allowed to cools, the balloon begins to slowly come down. Gas balloons are filled with a gas (helium or hydrogen) that is lighter than air, therefore providing lift.
Balloons cannot be steered in the normal sense of the word so they travel in the direction of the wind, which varies at different altitudes. Pilots skillfully use this as a way of changing direction by burning to go up, or allowing the air to cool to go down, and catch different air streams at different heights.
The principle behind hot air balloon physics is the Archimedes Principle which states that the buoyant force on a submerged object is equal to the weight of the fluid that is displaced by the object.
💁🏻♂️ GK TODAY
Aryabhatta : A mathematician and astronomer belonging to the classical age. His ‘Aryabhata’s 108′ consist of 108 verses. It covers several branches of mathematics such as algebra, arithmetic, plane and spherical trigonometry. Also included in it are theories on continued fractions, sum of power series, sine tables and quadratic equations. Also inventor of Zero.
He was the one who first explained, that the earth is in spherical in shape and rotates in its own axis around the sun, which takes 365 days to complete.
He also explained how solar and lunar eclipse takes place.
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Ch. Naveen Kumar |
