Nidish Gogia

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How speakers make sound

Speakers (also called loudspeakers) push and pull surrounding air molecules in waves that the human ear interprets as sound. You could even say that …

Atoms

Missed getting into an IIT? Learn Any Of Their Courses Online For Free. Here's How!

The IITs (Indian Institute of Technology) are one of the premier institutes of India and lakhs of people apply every year to get into these …

'Blue Energy' Is So Plentiful That It Could Meet All Our Electricity Needs

Could blue be the new green, asks BBC Future, referring to the so-called blue energy generated when fresh water rivers flow into salt water estuaries:<p>…

This video explains what is Dark Matter and Dark Energy

What we can see is mere 5% of Universe, the remaining 95% is made up of Dark Matter and Dark Energy!<p>It just took few centuries of persistent …

Why Is India Producing Unemployable Engineers?

After the buzz over India’s mission to Mars and the Prime Minister’s high-decibel Make-in-India, both meant to be showcases of the nation’s …

Employment

Blue energy: How mixing water can create electricity

The intriguing chemistry that occurs where rivers meet the sea could power our homes and much more, says Phillip Ball.<p>It is perhaps one of the most under-exploited sources of green energy. When salt water and fresh water mix in estuaries, a chemical process occurs that can be harnessed for …

Carbon Dioxide

The chemistry behind a firework explosion

There's a lot more science involved than you might think<p>It’s Independence Day, and that means it’s time for controlled explosions in the sky. No, not Texas post-rock — the great scientific display that is a fireworks show.<p>"Fireworks are an application of chemistry and engineering: you need good …

Appliance Science Experiments: Creating edible water spheres

In my last column, I explained the odd phenomenon of spherification, where two chemicals in water combine to form a gel that creates a sphere of water, making an edible water bottle. Now, I'll show you how to create your own edible spheres of water.<p>To create small spheres, you will need two basic …