Insights Blog
-- Browse All Articles --
Physics Articles
Physics Tutorials
Physics Guides
Physics FAQ
Math Articles
Math Tutorials
Math Guides
Math FAQ
Education Articles
Education Guides
Bio/Chem Articles
Technology Guides
Computer Science Tutorials
Forums
Trending
Featured Threads
Log in
Register
What's new
Search
Search
Search titles only
By:
Latest activity
Register
Menu
Log in
Register
Navigation
More options
Contact us
Close Menu
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Forums
Philip Koeck's latest activity
Philip Koeck
replied to the thread
I
How to narrow a beam to 1 mm diameter?
.
You can do it with 2 lenses. The first has to have 10 times the focal length of the second, for example 100 mm and 10 mm. Place them so...
May 17, 2024
Philip Koeck
replied to the thread
I
Efficiency of cycles bounded by two isotherms
.
Thanks! That's a great proof.
May 9, 2024
Philip Koeck
reacted to
Chestermiller's post
in the thread
I
Efficiency of cycles bounded by two isotherms
with
Like
.
Let ##dQ_H## be the differential increments of heat received by the engine during the heating part of the cycle, ##dQ_C## be the...
May 9, 2024
Philip Koeck
posted the thread
I
Efficiency of cycles bounded by two isotherms
in
Thermodynamics
.
I want to consider all possible reversible cycles that consist of an isothermal expansion at TH and an isothermal compression at TC. The...
May 6, 2024
Philip Koeck
replied to the thread
Significant figures doubt
.
I would agree with you.
May 1, 2024
Philip Koeck
reacted to
Lnewqban's post
in the thread
B
Physically speaking, what happens in Torricelli’s experiment?
with
Like
.
I I recommend you to visualize isobaric planes for static fluid problems. Unless the fluid is in movement and/or accelerating (other...
Apr 21, 2024
Philip Koeck
reacted to
erobz's post
in the thread
B
Physically speaking, what happens in Torricelli’s experiment?
with
Like
.
You need to do a free body diagram of the mercury column in the tube. From the free surface of the base to the underside of the tube...
Apr 19, 2024
Philip Koeck
replied to the thread
B
Physically speaking, what happens in Torricelli’s experiment?
.
I think you have it. With the bowl it's just a bit more complicated since the surface area of the mercury in the bowl is different from...
Apr 19, 2024
Philip Koeck
reacted to
adjurovich's post
in the thread
B
Physically speaking, what happens in Torricelli’s experiment?
with
Like
.
This one seems pretty obvious. We can see that atmosphere is pushing on the left free surface, while at the same elevation on the right...
Apr 19, 2024
Philip Koeck
replied to the thread
B
Physically speaking, what happens in Torricelli’s experiment?
.
I think it might be easier to discuss if you refer to the picture below since you can clearly see which forces are balanced. Give it a try.
Apr 19, 2024
Philip Koeck
replied to the thread
B
Physically speaking, what happens in Torricelli’s experiment?
.
Think of the force pushing the mercury up into the tube and the force pulling it down. I think it's simpler with the situation in the...
Apr 18, 2024
Philip Koeck
reacted to
Lord Jestocost's post
in the thread
I
Radiation from solid black bodies
with
Like
.
The spectral radiant exitance at the aperture in a cavity (the Planck blackbody radiant exitance) can only approximately be “mimicked”...
Apr 9, 2024
Philip Koeck
reacted to
pines-demon's post
in the thread
I
Radiation from solid black bodies
with
Like
.
Ok, I do not know how useful is this but let me try to explain it. The problem of an object emitting radiation without being in thermal...
Apr 9, 2024
Philip Koeck
reacted to
hutchphd's post
in the thread
I
Radiation from solid black bodies
with
Like
.
Thephoton that exists in your head and the photon that is the fundamental excitation of the quantized EM field are rather different...
Apr 9, 2024
Philip Koeck
reacted to
pines-demon's post
in the thread
I
Radiation from solid black bodies
with
Like
.
Maybe what you need is a good reference on how to derive heat transfer between two objects, then you will see that Planck's law gives...
Apr 8, 2024
Forums
Back
Top