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Blazing goIITian

Joined:	28 Apr 2008
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22 Jan 2009 17:57:21 IST

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explain bose's crescograph..plz provide graph as well.

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explain bose's crescograph..plz provide graph as well.

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N.P. Singh

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Joined: 17 Dec 2008

Posts: 446

24 Jan 2009 18:33:27 IST

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A crescograph is a device for measuring growth in plants It was invented in the early 20th century by Jagdish Chandra Bose, a Indian scientist.The Bose crescograph uses a series of clockwork gears and a smoked glass plate to record the movement of the tip of a plant (or its roots) at magnifications of up to 10,000. Marks are made on the plate at intervals of a few seconds, demonstrating how the rate of growth varies under varying stimuli. Bose experimented with temperature, chemicals, gasses and electricity

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