Joel Chevrier

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Questions related from Joel Chevrier

Interested in MOOC Smartphone Pocket Lab on FUN Platform: DIY at home experiments in classical mechanics with a smartphone ?

In the MOOC "Smartphone Pocketlab", you do real physics experiments at home and you learn scientific description of movement : speed, acceleration,...

12 December 2015 338 0 View

What is the smallest vibrating object one can hear? Nano?

What is the key argument to size it? Let's try with an oscillator f=1kHz. Very rough estimate. Emitted power is: We =m.v.dv/dt (Watt) with v=Rω and dv/dt=Rω^2 m= ρ.R^3; Total: We =...

02 February 2013 2,746 0 View

A tentative definition of the Nanoworld: a "no gravity" world only ruled by EM interaction ?

At our scale, and for our perception, weak and strong interaction are not present. Everything is essentially described by gravity and EM interactions. When moving to short scales, influence of...

02 February 2013 4,455 2 View