Sunday, December 23, 2012

Refreshing drink - Tender Coconut Water!

In India one can easily identify kiosks selling soft drinks by the bunches of tender coconuts hanging on the front of them. Even in winter these coconuts are available with them, since the water present in them has many other uses apart from being taken as a natural beverage. This Tender Coconut Water ('Elani thannee' in Tamil) found inside the greenish or orange tender coconuts ('Elanee') cools down the body in hot summer; so it is in much demand.

Thursday, December 13, 2012

The ubiquitous foam plastic - Thermocol!

In 1970s, I went to an exhibition conducted by a Polytechnic Institute located at Madurai, South India. There at one of the stalls, students were demonstrating to the public a block of white material that they cut by a heated wire! The hot nichrome wire stretching between two poles cut the block when it was applied from above and pressed down on it.

Wednesday, December 5, 2012

Goose bumps by smaller Erector pili muscles!

We notice occasionally that we have raised pimple-like areas on our skin each with a hair in its centre, when we enter into the chillness of outdoors or when we are excited much on seeing 'hair-raising' scenes. These raised skin areas are all well known as goose bumps (or goose flesh). How they are made?
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