Dumb question probably -- But is there a way to measure gravity in a particular area of space, or a "measurement" .. I.E. the gravity 10 miles above earth v.s 1000 miles above. Not force on another object, but some "unit" or measure of gravity itself.
I'm having some problems understanding Gibbs energy of formation, and how it's applied to electrolysis. So, I'm hoping someone can explain what I'm doing wrong..
According to his site: http://hyperphysics.phy-astr.gsu.edu/Hbase/thermo/electrol.html (image)
The change in the Gibbs...
Question.. I understand photons will curve around planets in space due to their gravity (or curved space-time). But do photons create their own gravity relative to their energy? From what I can gather, gravity is more of an aspect of energy than mass.
I noticed the following relationships, and I'm curious if these are why physicists believed all forces might have been equal (or unified) during the big bang.
Pm = Plank Mass
Pl = Planck Length
Pt = Planck Time
Pf = Planck frequency (non-angular) = 2.952104e42 Hz
Eo = Electric Constant
How do you calculate the thermionic work function of an element (hydrogen for example)?
I understand it is usually about 1/2 the ionization energy , but is there a formula to get the exact energy?
Can hydrogen even have a work function?
Thanks in advance.
Is there a physical meaning to the electron "smear" or probability cloud? If an object (electron) was to somehow travel faster than time, wouldn't it appear in multiple locations at once or as a "smear"?
Is a photon's wavelength dependent on the velocity (or acceleration) of the atom which it was emitted?
For example, if a photon is emitted from a stationary (or slow moving) molecule, then that molecule is accelerated. Will the photon's wavelength shift wrt to the acceleration (or...
I thought these were weird similarities between macroscopic electronic circuits and (Bohr) hydrogen model. What do you guys think?
hydrogen self-capacitance (energy level "capacitance")
C = 4*pi*eo*br = 5.88798e-21 Farads
eo = vacuum permitivity
br = Bohr Radius
m = electron mass
Are O2 levels dropping in our atmosphere? I read something a while ago that mentioned allergies are getting worse due to increasing CO2 levels in atmosphere, so I'm guessing O2 levels are dropping as well. I was in the mountains a week ago (out of a valley), and noticed how easier it is to...
The definition of matter is "anything that has mass and volume". Why doesn't the definition of matter mention anything about "time". Should time be mentioned as well since matter can't exist without it?
Also, If matter had its own SI unit, what would it be?
Edit:: a unit that could be...
What physical property of a particle determines its charge polarity. For example, with an electron and positron, what makes an electrons (-) and what makes a positron (+). Is there an observable difference that explains this (other than they attract each other and annihilate)?
Hello, I was just looking at this site: http://hyperphysics.phy-astr.gsu.edu/HBASE/thermo/electrol.html
which has a value TΔS = 48.7 kJ (change in entropy) ... Which i believe comes from the entropy value 69.91 J/K.
Can someone explain where the value 48.7 kJ comes from? I understand it is...
Since a photon moves at c has 0 mass, and doesn't "experience" time. Would it "see" everything in 2 dimensions (a frame) .. and could you say it only exists in 2 dimensions?
Could matter exist without time?
How can I determine the heat loss (to air) from a box of a specific material, with a heat source inside of it?
Also, how do you calculate the heat/energy loss of a heated gas into ambient air.