1,362 reputation
719
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location Germany
age 29
visits member for 2 years, 1 month
seen 1 hour ago

Sensor Development Engineer. Optical engineer.

2010 Graduated (physics, german Diploma) at Stuttgart, Germany. J. Wrachtrup and F. Jelezko. 3rd physics institute and research center SCOPE.


Oct
9
comment Atmospheric pressure's effect on sound
Welcome to Physics SE! Consider marking the question as answered by clicking the check mark near an answer. In that way the question disappears from the list of unanswered questions. :)
Oct
7
comment Uses of Static Electricity
Thanks, while editing I also thought of a capacitor :)
Oct
7
comment Uses of Static Electricity
Welcome to Physics SE. What have you tried to answer the question yourself? Please ask about a specific concept.
Sep
20
comment Can you punch a hole in an A4 sheet of paper with your hand?
A newspaper has a low bursting strength. The line where it is folded is a structural weakness. The trick even can be done with a newspaper in free fall - an archievement even for an martial arts artist.
Sep
18
comment Optimal size of a windmill for a given windspeed
Welcome to Physics SE! This is a common homework problem. Since length $r$ of blades is your concern, why not put it in the title? Here on PSE you find questions for "blade and wind" like a windmill with weighted blades or the homework hint for the work of a windmill. What have you tried to solve the problem?
Sep
14
comment Only transverse photons are gauge-invariant (Peskin page 298)
Welcome to Physics SE! You can add math inside Dollar brackets just like in LaTeX: $A_0$ It's called MathJax here. Others could understand your question if you included the equation.
Sep
11
comment Is there a possibility of hydrogen ignition when filling a weather balloon?
Welcome to Physics SE! What have you tried to calculate this static electricity? Where are you stuck?
Aug
24
comment Partial Pressure - Which solution is right?
Welcome to Physics SE! I edited your post to add the nice layout of the equations. MathJax on this website makes math more readable. Check it out! To learn it, just hit the edit button on your post and see, that the math simply is marked up using a dollar. SI units are separated by a small blank with "\,".
Aug
23
comment Problem regarding heat engines
Welcome to Physics SE! Your comment actualy helps to understand your problem :) Please click the edit Button and put it in your Question.
Aug
14
comment Why do the electron in Bohr's principal quantum levels or ground state do not emit radiation?
possible duplicate of classical understanding of an atom
Aug
6
comment Effective Refractive Index
+1 Welcome to physics SE! Consider marking an answer, that helped you by clicking the green check at the answer. This removes the question from the unanswered questions list.
Aug
5
comment Optics - Derivation of Linear Magnification of Lens without Sign Convention
For the derivation by similar triangles have a look at khanacademy.org. Physics > Waves > Object image heigt and distance relationship. The videos are both at the bottom.
Aug
1
comment Optics - Derivation of Linear Magnification of Lens without Sign Convention
possible duplicate of Sign convention for mirror and lens formulas
Jul
15
comment Help calculating field of view for ball lens I just bought
Yes, this is an additional problem.
Jun
29
comment Does Earth really have two high-tide bulges on opposite sides?
Welcome to Physics SE! You provided interesting information, but did not answer the question "Does Earth really have two high-tide bulges on opposite sides?" You guessed it has something to do with tectonitc plate movements, but did not give a reference to underline it. Anyway welcome :)
Jun
13
comment reflection at intersection of 2 mirrors
Independant of votes you may accept an answer which helped you most. You get 2 reputation and the question no longer is in the unanswered questions list.
Jun
10
comment reflection at intersection of 2 mirrors
+1 But the specifically asked within geometric optics. I agree however, that the application of a deeper concept than geometric optics may be applied. Depends on application.
Jun
10
comment reflection at intersection of 2 mirrors
@CarlWitthoft I tried to cover your reasonable arguments. Feel free to edit.
Jun
10
comment Relation between Radiance and Irradiance
+1 Welcome to physics SE! Consider marking an answer, that helped you by clicking the green check at the answer. This removes the question from the unanswered questions list.
May
26
comment How to specify BRDF measurement
+1 Nice question. To measure all materials from perfect mirror to absoulte black diffusor (2% of incident light is cosine distributed in hemisphere) your detector needs a large dynamic range. Can you select a range of materials between these two criteria? To rephrase it: Do you want to measure blackout materials to stray light reduction or optical media?