DaveE's latest activity
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DaveE replied to the thread Hacking of Ships.This? https://en.wikipedia.org/wiki/At_the_Abyss -
DaveE replied to the thread Help implementing LQR on rotary inverted Pendulum.If your sw is updating the step motor position frequently (not necessarily moving it, if that's not needed) and the step size is small...
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DaveE replied to the thread Beauty of old electrical and measuring things, etc..If y'all do Facebook, you might like this group. Pictures of dissected devices and such. https://www.facebook.com/ElectronicsPictures
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DaveE reacted to renormalize's post in the thread Graduate Continuity of the tangential components of electric field across an interface with
Like.
Thanks for clarifying. Then you should use parentheses to avoid confusing your readers... -
DaveE reacted to Ibix's post in the thread High School Why do people not notice the equinox when it happens? with
Haha.
Stonehenge is too big to carry around in your pocket? My Dad always used to go into work the day after summer solstice, assume his best... -
DaveE replied to the thread Unknown apparatus - vacuum tube of some kind?.More likely corporate R&D or Academic source. Back in the day when hardware wasn't all IC's there were lots of machine shops that would...
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DaveE replied to the thread Unknown apparatus - vacuum tube of some kind?.Odd that it's well sealed at the ends but has big slots cut in the side. It must have connected to some other sealed equipment.
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This project is rated at 10/10 (determined by how many fingers I have at the end). (Oops. I see these pics were taken just a few...
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DaveE reacted to Roberto Pavani's post in the thread Undergrad Are the space and time parts of a standing wave in 3D separable? with
Informative.
The separation is not a consequence of the wave being stationary. Rather, stationary modes arise from separable solutions of the 3D wave... -
DaveE reacted to PeterDonis's post in the thread Undergrad Can thermodynamics macrostates hide relevant quantum information ? with Like.
They are never enough to predict with certainty how the system will evolve. How accurate the predictions we can make from them are will...
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DaveE reacted to Matterwave's post in the thread Undergrad Can thermodynamics macrostates hide relevant quantum information ? with Like.
Are you asking about the domain of validity of thermodynamics? I still have a hard time parsing your question into a concrete one.
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DaveE reacted to Sagittarius A-Star's post in the thread High School Physicists .... help me understand free fall & acceleration with Like.
Yes, but then it would not be an acceleratometer. You can also construct an accelerometer with a lamp and a light sensor, mounted at...
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DaveE reacted to phyzguy's post in the thread High School Understanding the Reasoning Behind Basic Algebra with Like.
The fact that "if two quantities are equal and you do the same thing to both of them then they are still equal" seems pretty elementary...
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Well, I don't know what you are trying to get at. There are an infinite variety of rules that can be thought up. The ones we use have...
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I don't think you paid enough attention to @Dale's post #8. In your first post, you propose that ##0/0 = 1## and also that ##0^2/0 =...