Set-71+10 New Science Projects

Set-71+10 New Science Projects

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This circuit switches on the lights at dusk and switches them off at dawn automatically. It can also be used on tall buildings and T.V. towers, etc. where a red light is used to warn the approaching aircraft. Light dependent resistor (LDR) is usedanbsp;...

Title:Set-71+10 New Science Projects
Author:C. L. Garg
Publisher:V&S Publishers - 2011-04-01


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