Dale's latest activity
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There is one more complication. I learned the foundations of classical mechanics with John Taylor's Classical Mechanics, and I have now... -
Dale reacted to yatharthvishwa's post in the thread Hii, I'm Yatharth. I'm here because I'm interested in physics! with
Like.
Hello everyone, a cool friend of mine introduced me to this forum because she loves physics!!, and I wanted to join a community like... -
Dale reacted to raagamuffin's post in the thread Undergrad Euclidean geometry and gravity with Like.
(This is an observation, not a complaint. ) As I examine these ideas , every insight I gain spurs more questions about relationships...
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Dale reacted to Colin Wilson's post in the thread Undergrad Energy requirements of a 4 wheel drive boat with Like.
I did test a model years ago it did rise out of the water on a teather but then the motor died and that was that.
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Dale reacted to DaveE's post in the thread Undergrad Varying resistance readings depending on how I connect my meter with Like.
I think you're just learning why I hardly ever used those things for my breadboards. Plus, they aren't stable or durable. Basically, I...
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Dale reacted to Martyn Arthur's post in the thread Undergrad Varying resistance readings depending on how I connect my meter with Like.
Ok I can live with that; thanks or your help; I will try it with a clean pcb. Thanks Martyn
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Dale replied to the thread Undergrad Varying resistance readings depending on how I connect my meter.If the multimeter is accurate then it is accurately telling you that the breadboard is adding resistance. There really isn't anything to...
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Dale replied to the thread Undergrad Varying resistance readings depending on how I connect my meter.Well, either your multimeter is not good and is not reading the actual resistances, or your breadboard is adding some resistance. I...
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Dale replied to the thread Undergrad Varying resistance readings depending on how I connect my meter.The breadboard seems to add 0.4 ohms of resistance.
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So, my equation with the deltas was correct. The mistake happened when I switched from ##\Delta## to ##d##. That is something new. In...
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Dale replied to the thread Undergrad The rocket equation, one more time.Sure, that is part of “solve the equations consistent with your conventions”. I was just making a general statement. There is nothing...
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Dale reacted to PeroK's post in the thread Undergrad The rocket equation, one more time with
Informative.
You have no choice with the derivative: it's positive when a quantity is increasing. You have chosen the opposite convention for... -
Dale replied to the thread Undergrad The rocket equation, one more time.When you write something then it is up to you to be clear in all of your sign conventions and the meaning of each variable. If you do...
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As an example, imagine we have a financial spreadsheet. Let's say column A is the starting balance, column B is a deposit and column C...
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Dale reacted to PAllen's post in the thread Undergrad Is using r as a coordinate in Birkhoff's theorem a limitation? with Like.
I don't know if I can track it down from a long ago posts of mine, but I discussed a paper by a mathematician specializing GR that...