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Apr
23
reviewed Reviewed Does the angle of incidence change the refractive index?
Apr
23
revised Water flow in salt solutions contemporary exposed to an electrical and constant magnetic field
added tex and left content to author
Apr
23
reviewed Reviewed Water flow in salt solutions contemporary exposed to an electrical and constant magnetic field
Apr
23
suggested approved edit on Water flow in salt solutions contemporary exposed to an electrical and constant magnetic field
Apr
19
comment Focal Length Calculation
Your posted company Thorlabs has good online ressoures concerning working distance WC and focal length f. Post a separate question after studying these resources.
Apr
19
comment Rain drop sliding on car windshield
@Stealthmate Surface tension of water-glass surface determines contact angle to your windshield. Cleaning solvents will change this contact angle and area of contact.
Apr
16
comment Focal Length Calculation
You may select distance in parallel beam path arbitarly in geometric optics. Think about the lines in your diagram of a perfect parallel beam path: nothing will change the parallel lines until they refracted by a lens.
Apr
16
comment Focal Length Calculation
Improve your question by asking about a physics concept. You already learned focal length is related to making a perfect point source to a perfect parallel beam. Read about this geometric optics. Please feal free to ask specific questions about imperfect point sources - real sources.
Apr
16
comment Focal Length Calculation
+1 Yes, $f_2=d_5$. However I see from the sketch $d_1\neq d_{source}$ If it is also equal, than you are right.
Apr
16
reviewed Reviewed Focal Length Calculation
Apr
16
comment Focal Length Calculation
+0 Welcome to physics SE! This question has no answer, if you do not define two things. a) $d_{source}\neq d_1$ and b) diverging angle $\theta_{source}$ which your laser may provide in its manual as an FWHM angle. Adding this information will earn you +1
Apr
6
reviewed No Action Needed Does a force do work on an object with constant velocity?
Mar
22
comment Rain drop sliding on car windshield
Surface pressure of the water-glas interface simplified to friction is neglected?
Mar
19
reviewed Reviewed How does carbon dioxide or water vapour absorb thermal infra red radiation from the sun?
Mar
17
revised Clarification from Griffiths Introduction to quantum mechanics
hermitian, correct? and MathJax
Mar
17
revised Clarification from Griffiths Introduction to quantum mechanics
added MathJax
Mar
17
comment Clarification from Griffiths Introduction to quantum mechanics
+1 Welcome to Physics SE..
Mar
17
suggested approved edit on Clarification from Griffiths Introduction to quantum mechanics
Mar
17
suggested approved edit on Clarification from Griffiths Introduction to quantum mechanics
Mar
16
reviewed Reviewed $SU(2)$ symmetry and conservation law in condensed matter systems