476 reputation
29
bio website
location
age
visits member for 2 years, 5 months
seen Apr 11 at 20:24

Feb
25
revised In what situations do I use the characteristic length of a fin to find the surface area?
Add "convection" tag
Feb
25
suggested suggested edit on In what situations do I use the characteristic length of a fin to find the surface area?
Feb
25
answered In what situations do I use the characteristic length of a fin to find the surface area?
Feb
23
comment What is the most efficient way to use hand dryer?
There are a couple of problematic things here. (1) Air flow can increase evaporation independent of temperature. Water will evaporate faster into dry air than into humid air. So if air flow keeps stripping away water from the boundary layer of air around your hands, the water will "see" less humidity and thus evaporate faster, and at a lower temperature. (2) Most of the latent heat is probably supplied by the skin – even if the blow dryer has to heat the skin up first. Evaporation has an absurdly high heat transfer coefficient and will sap heat from whatever is nearby.
Feb
22
awarded  Investor
Feb
8
revised What is the most efficient way to use hand dryer?
change to "convection" tag
Feb
8
suggested suggested edit on What is the most efficient way to use hand dryer?
Feb
3
comment Should I heat my room when I'm not here, energy-efficiently speaking?
Hence the "practical" bit I added. Basically, you'd want to lower the temperature a bit at first, then keep lowering it until you find a good trade-off between livability and savings. If you're comfortable shutting the heater off entirely, that's obviously the ideal – you don't need to measure your house's heat capacity in a series of silly experiments.
Feb
3
revised Should I heat my room when I'm not here, energy-efficiently speaking?
added 126 characters in body
Feb
3
answered Should I heat my room when I'm not here, energy-efficiently speaking?
Jan
26
revised Why is the nucleus of an Iron atom so stable?
Display math
Jan
26
suggested suggested edit on Why is the nucleus of an Iron atom so stable?
Jan
8
revised Putting a spoon in boiling tea brings the froth down. Why?
It has two n's.
Jan
8
suggested suggested edit on Putting a spoon in boiling tea brings the froth down. Why?
Dec
29
comment Newton's Second Law the real one. Is my theory correct?
$d\mathbf{p}/dt$ doesn't depend on the dimensions of $\mathbf{p}$; each coordinate is differentiated separately to get a result vector with the same dimensions as $\mathbf{p}$. $\nabla\mathbf{p}$ also gives a vector result, but it means something completely different – in $\mathbb{R}^3$, $\langle\;d\mathbf{p}/dx,\;d\mathbf{p}/dy,\;d\mathbf{p}/dz\;\rangle$.
Dec
18
revised How does gravity work underground?
LaTeX formatting
Dec
18
suggested suggested edit on How does gravity work underground?
Dec
18
comment This is going to sound really stupid. But how do I change my normal force?
(1) Seriously, you can pass out by doing this. And the paramedics will laugh at your squeaky voice. (4) The places on Earth with the lowest gravity are Zaire, Ceylon, and the Leeward Islands. Go to a doctor over there.
Dec
17
revised Phase of Elements
Change to established tag
Dec
17
suggested suggested edit on Phase of Elements