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visits member for 2 years, 4 months
seen May 3 at 18:39

Jul
22
awarded  Yearling
May
21
comment Why can I add the Atomic form factors in the calculation of the Diamond Structure factor
Thanks for answering this old question, I already figured it would be like this.
May
21
accepted Why can I add the Atomic form factors in the calculation of the Diamond Structure factor
Jan
28
asked Why can I add the Atomic form factors in the calculation of the Diamond Structure factor
Dec
6
awarded  Investor
Nov
26
awarded  Caucus
Nov
25
comment Is flying really easier on smaller scales?
Thank you for the point I will fixed my answer. It was not a claim I just put the root over the wrong quantity and didn't realize it.
Nov
25
revised Is flying really easier on smaller scales?
added 25 characters in body
Oct
26
revised Is flying really easier on smaller scales?
added 37 characters in body
Oct
26
answered Is flying really easier on smaller scales?
Oct
20
awarded  Supporter
Oct
20
comment Why I think tension should be twice the force in a tug of war
Sorry I didn't read through your whole text. "If only 'A' is pulling and 'B' is not, then I agree that the tension is equal to the force 'A' exerts." This does not work if you pull a massless rope with 100N there is no tension It would just accelerate infinitely.
Oct
20
comment Why I think tension should be twice the force in a tug of war
Imagine 1Kg-block hanging on the ceiling. Each hook (the one in the ceiling and the one in the 1Kg-block) pull with 100N still you would not get the Idea that the tension would be 200N. In the rope example the ground takes care of the other 100N.
Oct
20
comment Is airspeed constant or cyclical when flying model aircraft in windy conditions?
1. I believe you are right but the Question is trivial, this is probably why no one bothered to answer 2. Airspeed is the speed of an aircraft relative to the air (Wikipedia) 3. You turn an aircraft into the wind. Because of the Inertia of the modell plane, absolute speed is an Continuous function so your air speed is increased until it goes down again following approximately dv/dt=DRAG*V/(MASS of the Airplane)-ROTORFORCE. This probably does not occur in big airplanes because they fly at higher speed and have a different drag to Mass Ratio and thy can not get their speed through the turn.
Oct
20
answered Does infinite energy imply Infinite mass (and vice versa)?
Sep
1
awarded  Commentator
Sep
1
comment Parachute jumping (high altitude)
you might want to take en.wikipedia.org/wiki/Drag_equation And in place of the density you put it in the en.wikipedia.org/wiki/Barometric_formula
Aug
26
awarded  Critic
Aug
6
comment Does a coronal mass ejection change solar neutrino emission rates?
Most of suns neutrinos are created through the fusion cycle deep inside the sun (en.wikipedia.org/wiki/Solar_neutrino). CME is completely uncorrelated. And what does increasing rate mean? 1% increasing rate in minutes/years/10^5 years? Or do you want to know if the Neutrino output increases throughout the lifetime of a star?
Jul
31
comment Rotating mirror - Foucault's measurement of light speed
good point. Well basically you would still get double the intensity on the one point. I was wrong to put a blind in there it would only double the intensity. In the experiment we put a Lens between the rotating mirror and the reflecting mirror, with the focal point of the lens in the rotation center of the rotating mirror. That way the point is a lot brighter because for 20° rotation of the rotating mirror (depending on the size of the lens) the light is reflected back. Foucault used a Cog with a frequency coupled to the rotating mirror to stop the other light from coming through.