Hans-Peter E. Kristiansen

less info
727 reputation
413
bio website none
location Aarhus, Denmark
age 37
visits member for 2 years, 6 months
seen Apr 16 at 19:27

Stud. Scient. Casual LaTeX user. TikZ newbie.


Apr
14
comment Is mathematical mysticism still part of the physical sciences?
Why do you not read about these things, or post conceptual clear questions here? -instead of posting this obscure non-answerable question?
Apr
9
answered Why is copper a metal?
Mar
12
answered Does the stretching of space time have a limit?
Mar
7
comment Object that causes spacetime to expand?
en.wikipedia.org/wiki/… en.wikipedia.org/wiki/… en.wikipedia.org/wiki/Casimir_effect
Mar
7
comment Metallic and glass sphere of same size released at a height
This question is impossible to answer without more information. I will down-vote for now, and return later to flag for closure or up-vote.
Mar
5
comment Metallic and glass sphere of same size released at a height
This is not what OP is asking about. The density can be anything. What will be different is the conductivity.
Feb
19
comment If photons don't have mass, how can they accelerate objects?
It does have everything to do with momentum. Light does not have charge or mass, but it does have momentum. en.wikipedia.org/wiki/Photon#Physical_properties
Feb
18
comment Is force the unique possible relation between particles?
Your answer is well written, and maybe well meant, but... I doubt that OP will able understand any of this. The OP question is all over the place - closer to creationism than physics.
Jan
30
comment How does a flywheel generate electricity at a constant voltage?
When you say the generator, what do you mean? A specific instance of a generator? -located where? Or maybe specific type of generator? Have you read the wiki page? en.wikipedia.org/wiki/Electric_generator
Jan
30
revised Faster than light galaxies/clusters?
Removed abbreviation error
Jan
30
suggested suggested edit on Faster than light galaxies/clusters?
Jan
30
comment How the tube of a tire get puncture?
Because of nails and glass.
Jan
30
comment Which one conducts heat better: water, or air?
Not just twice as well, but more than twenty times better.
Jan
25
comment Is there a sound that explodes gunpowder?
@Jitter: No - it is not light, but microwaves - hence the name microwave oven. Microwaves and light are both electromagnetic waves.
Jan
25
comment Is there a sound that explodes gunpowder?
"Sometimes, microwave heating is explained as a resonance of water molecules, but this is incorrect;[14] such resonances occur only at above 1 terahertz (THz)." from en.wikipedia.org/wiki/Microwave_oven
Jan
25
awarded  Enthusiast
Jan
20
accepted Death by neutrinos - polonium go home
Jan
19
comment During reflection does the emitted photon have same properties?
Depends on what you mean by similar. In both cases there is an incoming and outgoing photon and an electron(within an atom) involved. You can read about both processes on wikipedia.
Jan
19
comment During reflection does the emitted photon have same properties?
What you are describing is not reflection, but photoluminescence. What you want is called Compton scattering.
Dec
28
comment Does thermal energy change within a chamber depending on what's in it, where it is, what it is?
Nothing is wrong with cubic-feet and fahrenheit in everyday use in parts of the wold. You also write lb and ounce and 9x9 nothing. All of it seems irrelevant to what you are asking.