Why don’t all clouds produce rain?

‘Water vapor’ is always present in the air. When the temperature reduces, the water vapor condenses into tiny droplets of water. Now we say that the air is ‘saturated’. When this saturated warm air rises to an altitude where the temperature is lower, more condensation takes place and we have ‘cloud’ made of closely packed […]

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Where is Easter Island?

Easter Island, known as ‘Rapa Nui’ in the native Polynesian language or ‘Isla de Pascua’ in Spanish, is an island in the South Pacific Ocean belonging to Chile. Located 3,600 km west of continental Chile and 2,075 km east of Pitcairn Island, it is one of the most isolated inhabited islands in the world. Some […]

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Principles of chromatography

Chromatography’ is an analytical technique commonly used for separating a mixture of chemical substances into its individual components, so that the individual components can be thoroughly analyzed. There are many types of chromatography e.g., liquid chromatography, gas chromatography, ion-exchange chromatography, affinity chromatography, but all of these employ the same basic principles. Chromatography is a separation […]

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Capillary action

Even if you’ve never heard of capillary action, it is still important in your life. Capillary action is important for moving water (and all of the things that are dissolved in it) around. It is defined as the movement of water within the spaces of a porous material due to the forces of adhesion, cohesion, […]

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WHO INVENTED DOUGHNUTS?

The delicious doughnuts had existed since the beginning of time. In early colonial times, in US, Dutch immigrants discovered fried cake. So, the story goes—- a cow kicked a pot full of boiling oil over some pastry mix, thus inventing the golden-brown delight. Apparently, they didn’t share this great discovery with their homeland and the […]

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