Gravity and Theory of relativity
It's ridiculous
Related to Astronomy and Gravity.
06 July 2014 592 14 View
The Bohr structure of atom consists of a nucleus (~fm), surrounded by electrons cloud (~ nm). Now, having a scale graduated in " nm" due to uncertainty in electron position in the cloud (ie...
06 July 2014 569 4 View
I’m trying to reproduce the acousto-optic coupling simulation in the paper Frequency–angular resolving LiDAR using chip-scale acousto-optic beam steering. LNOI(lithium niobate on insulator) is...
13 August 2024 9,795 0 View
I'm researching light sources and their UV emissions. I'm curious if a 50W, 7500K conventional LED lamp emits any UV light. I found that a 200W tungsten lamp can emit up to 1.5 mW/cm² at 350 nm....
31 July 2024 3,843 7 View
I'm having a bubbling error while splicing 100/350 um optical fiber (core/cladding) on the Fujikura FSM100P+. I have tried some ways such as changing Prefuse power and Prefuse time but to no...
03 July 2024 7,463 6 View
a) Design a scalable and robust network architecture that can handle the increasing data traffic and support various communication technologies. b) Recommend suitable transmission technologies,...
10 June 2024 2,187 1 View
I am currently doing my thesis on FSO, to calculate the weather attenuation I need the FOG and visibility data of Bangladesh. Ideally, I need historical fog and visibility data for Bangladesh....
17 May 2024 1,954 0 View
The question inquires about the potential use of the sol-gel technique for producing fiber preforms (rods) and whether its application is limited solely to volume optics. The sol-gel technique...
15 May 2024 9,211 0 View
I would be very thankful if somebody helps me with some practical advices about producing twin photons? I know that twins are produced after a laser ray is directed on a BBO crystal. After the BBO...
14 May 2024 9,208 2 View
In path integral formulation of QM Feynman show that for a photon every possible path should be taken. I'm puzzled how this must be applied for entangled photons. Let there is a pair starting at...
05 May 2024 7,461 7 View
Where could I buy a magnetic shield layers which suppresses the magnetic field below 1μG?
26 April 2024 1,630 0 View
Tansverse resonance condition for the single layer(FIg.3) waveguide has bee deduced, as shown in Fig.2, which contains the phase shifts cause by reflection and optical path difference. Only light...
24 April 2024 1,748 4 View
