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comment How can an electron fake a jet?
Jets at CMS quantumdiaries.org/2011/06/01/anatomy-of-a-jet-in-cms , for ATLAS becher.itp.unibe.ch/LHC/CalorimeterAndJets.pdf it seems jet reconstruction starts in the calorimeters. page 4.
2h
answered The existence Water nanoparticles
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comment The existence Water nanoparticles
People have been looking for structure in water en.wikipedia.org/wiki/Polywater en.wikipedia.org/wiki/Water_memory . No success, experiments had contaminants.
2h
revised Nuclear to Electricity Energy Conversion
added 207 characters in body
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comment Nuclear to Electricity Energy Conversion
@jameslarge Thanks , obviously I did not know that, I will edit
3h
revised How can an electron fake a jet?
clarification
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comment How can an electron fake a jet?
@user153330 thanks for having the stamina to change images to text !!
11h
comment What is the difference between Raman scattering and fluorescence?
@JohnRennie well ,I see, the famous field theoretical framework. Us experimentalist when we see an electron hitting a proton and losing some energy on the proton call it the same electron.
12h
comment What is the difference between Raman scattering and fluorescence?
@JohnRennie just saw this. Of course a photon can interact and not be absorbed, "compton scattering" and "elastic scattering in cms" , just get lower frequency, the equivalent can happen with a molecule and a lattice too.
12h
comment Is there a preferred mode of exchange of gluons?
It is not simple. do read en.wikipedia.org/wiki/Gluon#Numerology_of_gluons
16h
comment Thomson scattering cross section: free electrons vs atoms
The atom is neutral, so taking the charge of the atom means zero to zeroth order. The electron interacts with a virtual photon with the spill out fields of the speficic atom, due to the complicated shapes of the orbitals. You need atomic form factors to get at crossections nist.gov/data/PDFfiles/jpcrd67.pdf
17h
comment Why is there no current flow when i connect two opposite terminals of two separate batteries
@justin I cannot teach chemistry. The way the chemical reaction works has been utilized in the set up of the battery. There is no if about the way the energetics of chemical reactions go.
17h
awarded  Enlightened
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awarded  Nice Answer
19h
comment Why is electrical energy so difficult to store?
@justin The water deposited on high lakes etc, comes from rain, and rain is powered by the sun ( evaporation) . One can increase the mountain water by using solar panel electricity to pump from a low reservoir to a high one, a gravitational storage
19h
comment Why is there no current flow when i connect two opposite terminals of two separate batteries
@justin if the copper is not deposited the SO4 will not carry a charge(-2), read the diagram, it shows how ball is played with the charges and the copper and zink . There can be other electrolytes, but not randomly guessed. The chemistry has to work. .
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comment Why can't incoherent light be collimated as well as laser light (e.g. in a laser pointer)?
@Ruslan yes, but we are talking of a pencil pointer here, and whether it makes sense to use a LED or a laser. I have to go now so I will look at this after doing my chores.
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comment Why can't incoherent light be collimated as well as laser light (e.g. in a laser pointer)?
@Ruslan are you saying that ,lets say, a 1mwatt laser pointer and a 1mwatt LED can deliver the same power to the spot on the screen?
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comment Why can't incoherent light be collimated as well as laser light (e.g. in a laser pointer)?
@Ruslan and the fact that the power of the laser is concentrated in a parallel beam versus the LED which is 4pi plays no role in making the LED useless for a pointer?
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comment Why can't incoherent light be collimated as well as laser light (e.g. in a laser pointer)?
@Ruslan I think it is small because it is constructed to be small , it will be a pointer after all. madehow.com/Volume-7/Laser-Pointer.html