Why does tamarind clean brass utensils?
Old-school cleaning hacks explained.
Infrasonic waves
Can elephants “talk” using sounds humans can't hear?
What is pH and why is it important?
Is it just about acids and bases?
Doppler in sound
Why does a passing train whistle sound higher as it approaches and lower as it leaves?
Why does milk spoil faster in summer?
Is it only about temperature?
Loudness vs intensity
Why does loud music feel “vibrating” in your chest sometimes?
Why is baking soda used in cakes?
What's the “fluffing” secret?
Musical instruments
Why do guitar and violin produce different sounds even on the same note?
Why do we get relief from wasp stings using baking soda?
What's the reaction behind it?
Sonic boom
Why do fighter jets create a loud “boom” when flying fast?
Why is bleaching powder used to disinfect water?
How does it kill germs?
Why is gold used in jewellery?
Is it only about its shine?
Why is sodium stored in kerosene?
Why can't we just keep it in air?
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