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age 29
visits member for 2 years, 6 months
seen Aug 24 at 10:15

Aug
17
comment How does water help extinguish fire?
@RBarryYoung don't forget low-toxicity.
Aug
14
comment Save a falling person by nullifying their mass or reversing gravity
Anything you could do that could save the man would have to be gradual...
Aug
14
comment Save a falling person by nullifying their mass or reversing gravity
Okay so insane gravitational field... Thus insane gravitational gradient, there extreme tidal effects. Therefore pancakes.
Aug
14
comment Save a falling person by nullifying their mass or reversing gravity
Neither. If you are traveling a 300mph at a brick wall in zero gravity, you'd still hit a brick wall at 300mph.
Aug
10
comment Is neutrino-based communication possible?
Come to think about it, neutrinos are often used to signal to earth scientist to prepare the light telescopes for a supernova event.
Aug
10
comment Is neutrino-based communication possible?
@jameslarge they are if your fibre optics cables loose. Ridiculous: A Loose Cable Caused Those 'Faster-Than-Light' Particles
Aug
10
comment Is neutrino-based communication possible?
Is there any practical application to your neutrino based comm system? Are we expecting to need to communicate FTL with an alien species which has loose fibre optic cables?
Aug
10
suggested rejected edit on Will drinking ice cold water and eating cold food cause weight loss (over a period of time)?
Jul
24
comment Will computer fan rotate slower if one makes impeller heavier?
That wasn't your argument. I am aware that if mju doesn't change then obviously a higher loading on the bearings would increase friction. But that wasn't what the OP said. The OP said "bearing friction do not change". Nor was it what you said.
Jul
24
comment Will computer fan rotate slower if one makes impeller heavier?
I disagree with your analysis. The tensor of Inertia only affects the fan when the angular momentum is changing. Assuming that the fan gets to a steady state, then by definition the angular momentum ISN'T changing.
Jul
8
comment How can I estimate the cooking time of a roast?
160°F ? What kind of Physicist are you? Either use Kelvins or Rankines!
Jul
6
comment Does stopping the same bike and rider at the same velocity with the front brake require less energy than the back brake?
"For motorbikes, it is recommended that you use the front brake more heavily to prevent skidding" This is true of bicycles as well. Unfortunately the average skill level of cyclist is far below that of the average motorbike rider.
Jun
29
comment How can a material conduct heat but not electricity
The logical fallacy here is that free electrons carrying heat does not mean heat is carried by free electrons.
Jun
15
comment How would the laws of nature behave if we reversed time?
@Ooker What Ian is saying is that the Newtonian laws of motion (when neglecting friction/air resistance and co-efficient of restitution) are invariant under time reversal (are the same). These two effects are also the first casualties in Spherical Sheep in a Vacuum style Physics.
Jun
10
answered What is a conservative force?
May
26
comment in Newtons 3rd law, where does the second body get its energy to react?
I think you have confused force and energy. If I am sat on a chair (which I am currently doing). Then the chair is pushing me up, whilst I am pushing down. No energy transfer is happening as no change is occurring.
May
23
comment What would be the rate of acceleration from gravity in a hollow sphere?
Why is this answer more popular than the Newton's Shell Theorem answer?
May
17
comment How electrons move so fast in a electric circuit?
@reirab what is this orbital velocity you speak of?
May
17
comment Question on normal force and static friction
The point is that friction is a retarding force. It only exists to oppose another force. Therefore there is are two limits to friction, (normal contact force * coefficient of friction), and (sum of other forces acting on the object).
May
14
comment What will happen if a ball of ice with the mass of sun is thrown into the sun?
At the energies that this situation provides, I doubt there is time for thermalization of anything.