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visits member for 2 years, 7 months
seen Aug 7 at 9:24

Jun
10
reviewed Approve Find time-parametrization given path and speed of a particle
May
7
reviewed Approve North and south of magnetic field
May
4
answered What would we see back on Earth if we shot a camera off into space and watched a live-stream?
May
4
reviewed Approve Yield Strength versus Ultimate Strength
May
4
answered How does the number of electrons and protons determine the melting point and hardness of a solid?
May
4
reviewed Approve How does the speed of a DC motor depend on the size of the coil?
Apr
27
comment Can this RC boat work in thoery?
This most certainly will not work the way your friend thinks. Skip the tissue and direct the airflow in the direction opposite to your preferred travel direction and you might be able to accomplish a descent airboat.
Apr
27
reviewed Approve Is the flux through A the same as the flux through B?
Feb
24
answered Persistent fluorescence
Feb
11
reviewed Approve How come some people are claiming that the Big Bang never happened?
Jan
13
comment What happens to solar cells in water (or in anything other than air)?
@EricCzech This might not be what you were wondering about, but some of the light will be shifted in wavelength due to vibrational Raman scattering. It would require a thick layer of water to get significant Raman scattering though, and some scattered light not reaching the solar cell at all would probably have a larger effect on the efficiency than the wavelength shifts.
Jan
13
comment The graph of Alternating current
Probably a combination of the fact that sinusoidal AC was easier to generate when AC was invented and widely adapted and that square waves has a bunch of drawbacks. What made you think it would be immediate?
Jan
13
comment The graph of Alternating current
That would be a square wave. But the most common form of alternating current (the one used in power grids) is indeed sinusoidal.
Jan
13
comment The graph of Alternating current
Why would you think it is immediate?
Jan
11
awarded  Yearling
Sep
2
reviewed Edit $\mathrm{CO_2}$ rate of deposition
Sep
2
revised $\mathrm{CO_2}$ rate of deposition
edited body
Sep
1
comment How to weigh your nephew
The obvious method is of course to divide your nephew into small enough pieces that you can weigh each of them on the 5 kg scale and then sum the weights. Due to health reasons, I normally wouldn't recommend this method, but maybe it's ok since you mention that you're not attached to him.
Aug
29
reviewed Edit General relativity: gauge fixing
Aug
29
revised General relativity: gauge fixing
fixed syntax