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Pranay Dhingra
@dhingrapranay15
28
I am a school going kid and I am very fond of meeting people with same interest's
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New Delhi , India
Created
2017-06-19 19:44
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dhingrapranay15
knowledge
9y
how an automatic fire alarm works
The automatic fire alarm system uses the fact that different solids expand by different amounts on heating . The alarm contains two metal stripes , one of iron and the other of brass , firmly bolted together
$ 1.561
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dhingrapranay15
life
9y
fidget spinner
hi guys , so There’s a new, dumb trend: the fidget spinner. It’s a toy like a top, but spin in the hand rather than on a surface. The user holds a pad at the center, and flicks one of three rounded blades.
$ 0.118
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