Zagmag

Know this about the weather too

By GS Team
17 Jul 20263 mins read
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આપણા રોજિંદા જીવનમાં વપરાતા રેફ્રિજરેટર અને ફેક્ટરીમાં બનતો બરફ 200-300 વર્ષ પહેલાં ઉપલબ્ધ નહોતો. તે સમયે, બરફ મેળવવા હિમાલય પર્વતો પર જવું પડતું. 1810માં, સ્કોટિશ વૈજ્ઞાનિક સર જ્હોન લેસ્લીએ હવા પંપનો ઉપયોગ કરીને પાણીમાંથી બરફ બનાવ્યો. તેમણે હવાના દબાણ અને તાપમાન માપવાનાં સાધનો પણ બનાવ્યા. 1832માં તેમને વિજ્ઞાનમાં યોગદાન બદલ નાઈટની પદવી અપાઈ.

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Know this about the weather too

The term Mausam (season/weather) was popularized by Arab sailors. In English, it is called the Monsoon. Five hundred years ago, an Arab scholar wrote a detailed book about when the monsoon sets in over certain islands in the Indian Ocean.
Do you know why there is a rooster on the weather vanes placed on rooftops to show wind direction? When Peter, a loyal disciple of Jesus Christ, betrayed him, a rooster crowed three times as a warning. Thus, the rooster became a symbol of warning, leading to the tradition of placing a rooster on the spinning vanes that indicate wind direction.
An instrument to measure rainfall was invented in India two thousand years ago. It was a bowl-shaped vessel with a diameter of 18 inches. Today, an 8-inch diameter cylinder with a depth of 20 inches is used to measure rainfall.
Warm currents occasionally emerge in the ocean waters of Peru in South America. During these periods, life thrives even in the Peruvian desert. This phenomenon is called El Niño. Since this effect occurs in late December, it was named El Niño, which means "the Christ child."

Planets are round, so why not asteroids?

All the planets orbiting the Sun are round like balls. They became spherical because they were spinning at tremendous speeds when they separated from the Sun. Asteroids, however, come in all shapes. Millions of asteroids orbit the Sun between Mars and Jupiter. Astronomers have studied several of them. About 200 asteroids larger than 100 kilometers in size have been observed. None of them are round; instead, they are irregularly shaped pieces of broken rock.
Scientists have named several asteroids. Asteroids are rocks broken apart by collisions between celestial bodies. An asteroid named Ida is square-shaped. Vesta and Pallas look like massive rocky boulders about 500 kilometers wide. Asteroids are highly unpredictable; they can collide with one another at any time and break into even smaller pieces.

The Inventor of Artificial Ice
Sir John Leslie

We have refrigerators for daily use and factory-made ice readily available to us. However, two to three hundred years ago, no one knew how to make ice. If anyone wanted ice, they had to go to the Himalayan mountains. People knew about snowfall and ice, but nobody knew how it could be made at home. In 1810, a scientist named John Leslie froze water to create ice that could be used at home for the first time. Leslie studied the air deeply and invented several instruments useful for measuring air pressure and temperature. He made the highly useful discovery that allows ice to be made at home even during the summer today.
John Leslie was born in Largo, Scotland, on April 10, 1766. He was interested in science and mathematics from childhood. After completing his higher education at the University of St Andrews, he started working as a private tutor. He studied steam and air by heating water in vessels made of different metals. In 1810, he used an air pump to turn water into ice. He frequently visited London for his studies and also became a member of the Royal Society. In 1832, he was knighted for his contributions to science. He passed away in November 1832.