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when samoth scratches his head

  • Thread starter Thread starter Spartacus
  • Start date Start date
pintoca said:
Samoth, what is the diferential equation that describes the action of a shock absorber?
you haven't specified the variables
if you can do that to the satisfaction of mr samoth you get the k
 
4everhung said:
you haven't specified the variables
if you can do that to the satisfaction of mr samoth you get the k

tipically you would have the travel distance within the casing , the viscosity of the fluid or the spring) acting as a break and the force applied (hitting a pothole, for example)
 
pintoca said:
tipically you would have the travel distance within the casing , the viscosity of the fluid or the spring) acting as a break and the force applied (hitting a pothole, for example)

*points at engineers and laughs*

*goes back to physics*




:cow:
 
pintoca said:
tipically you would have the travel distance within the casing , the viscosity of the fluid or the spring) acting as a break and the force applied (hitting a pothole, for example)
I hope you're just getting kranked up
 
though I thank you for reminding me to change my differential fluid
I'll be back
 
samoth said:
*points at engineers and laughs*

*goes back to physics*




:cow:

mmmph

ok, let's see your field. How versed are you with Pomerons?

I have a good friend who while @ DESY worked on a very cited Pomeron study. They studied the hard diffractions and Charm production of the Pomeron singularity.

Please share some light on the Hera kinematics that substantiate the whole Pomeron deal (this is all theoric physics, we have had many a great beer-fueled conversations on this topic)
 
The Shadow said:
HERE YOU GO:

1 - Define the universe
2 - Give two exapmles

Let U be defined as the universe.

Let s and t be subsets contained within U, such that s =/= t for all s, t contained within U.



HTH,

:cow:
 
samoth said:
Let U be defined as the universe.

Let s and t be subsets contained within U, such that s =/= t for all s, t contained within U.



HTH,

:cow:



I was hoping you would catch my misspelling
 
dullboy said:
dullboy says not even a rocket scientist could figure out this thread.


get it?

The irony is that 4ever can't award the karma to himself, lol.

I still can't figure out who a Mortician's competition would be.




:cow:
 
That's a simple harmonic DiffEq with dampening.

(The second derivative of the distance traveled with respect to time) minus the (damping constant due to the viscosity of the fluid divided by the mass supported by the spring which is multiplied by the first derivative of position with respect to time) all added to (the force applied divided by the mass multiplied by the position).
 
samoth said:
Error.

Quarks can change 'type' sporadically, thus we could never specifically look for charm quark production.



:cow:

it's a different ballgame, samote, from the study abstract:

Particle Physics - Experimental Results
Abstract Inclusive jet cross sections for events with a large rapidity gap with respect to the proton direction from the reaction ep \rightarrow jet \; + \; X with quasi-real photons have been measured withthe ZEUS detector. The cross sections refer to jets with transverse energies E_T^{jet}>8~GeV. The data show the characteristics of a diffractive process mediated by pomeron exchange. Assuming that theevents are due to the exchange of a pomeron with partonic structure the quark and gluon content of the pomeron is probed at a scale \sim (E_T^{jet})^2. A comparison of the measurements with model predictionsbased on QCD plus Regge phenomenology requires a contribution of partons with a hard momentum density in the pomeron. A combined analysis of the jet cross sections and recent ZEUS measurements of thediffractive structure function in deep inelastic scattering gives the first experimental evidence for the gluon content of the pomeron in diffractive hard scattering processes. The data indicate thatbetween 30\% and 80\% of the momentum of the pomeron carried by partons is due to hard gluons.
 
redguru said:
That's a simple harmonic DiffEq with dampening.

(The second derivative of the distance traveled with respect to time) minus the (damping constant due to the viscosity of the fluid divided by the mass supported by the spring which is multiplied by the first derivative of position with respect to time) all added to (the force applied divided by the mass multiplied by the position).

And the third derivative?

*nerdish giggle*



:cow:
 
pintoca said:
it's a different ballgame, samote, from the study abstract:

Particle Physics - Experimental Results
Abstract Inclusive jet cross sections for events with a large rapidity gap with respect to the proton direction from the reaction ep \rightarrow jet \; + \; X with quasi-real photons have been measured withthe ZEUS detector. The cross sections refer to jets with transverse energies E_T^{jet}>8~GeV. The data show the characteristics of a diffractive process mediated by pomeron exchange. Assuming that theevents are due to the exchange of a pomeron with partonic structure the quark and gluon content of the pomeron is probed at a scale \sim (E_T^{jet})^2. A comparison of the measurements with model predictionsbased on QCD plus Regge phenomenology requires a contribution of partons with a hard momentum density in the pomeron. A combined analysis of the jet cross sections and recent ZEUS measurements of thediffractive structure function in deep inelastic scattering gives the first experimental evidence for the gluon content of the pomeron in diffractive hard scattering processes. The data indicate thatbetween 30\% and 80\% of the momentum of the pomeron carried by partons is due to hard gluons.

Dude, EF doesn't support LaTeX.



:cow:
 
VoyagerCover.jpg_2.gif
 
redguru said:
BTW, for those that don't know, the third derivative of position with respect to time is known as jerk.
not where I come from
 
redguru said:
BTW, for those that don't know, the third derivative of position with respect to time is known as jerk.

Mechanics is dryer than E&M, so stuff like this and the beer equation (mgd) are the highlights of humor.



:cow:
 
What is the optimum lordotic cervical angle and what are it's advantages biomechanically from an enginerring or mathmatical standpoint?

Also consider shock ad/absorbtion and conservation of energy when discussing your findings.
 
JarheadChiro said:
What is the optimum lordotic cervical angle and what are it's advantages biomechanically from an enginerring or mathmatical standpoint?

Also consider shock ad/absorbtion and conservation of energy when discussing your findings.

SWeet, thanks. More GRE vocab, lol.

I had to look this one up:

Quick definitions (lordotic)

adjective: having abnormal sagging of the spine (especially in horses)
See lordosis




:cow:
 
I'm no scientist
but I think the actual shock in question needs mention
the vehicle itself too
mileage on the shock
strut
 
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