Dale's latest activity
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Dale replied to the thread B Gravity and speed of information for orbiting planets.The same situation applies in electromagnetism. Basically in both cases you find the retarded time, and at the retarded time you... -
Dale replied to the thread B A question about warp bubbles and navigation.I think that is indeed a problem. But I would assume that any civilization that is advanced enough to create a warp bubble would also be...
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Which one? Besides, I don't think that every single mathematic manipulation has physical meaning. Again, what's the physical meaning of...
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Dale replied to the thread Rethinking Physics Education.I would replace step 1 with laboratory exercises. You can learn more about voltage and current with a multimeter than with pictures. This ^
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I believe what your are asking for in concept is laboratory activities. Data treatment is also part of the post-laboratory analysis of...
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Dale reacted to gwnorth's post in the thread Job Skills Degrees with actual guaranteed jobs after graduation? with
Like.
I'm beginning to understand why you're having difficulties finding a job. You're very rigid in your thinking and not very adaptable. You... -
Dale reacted to fresh_42's post in the thread B Which technique has been used? (drowning victim recovery in a lake) with Like.
<censored> You cannot achieve anything that you wouldn't already have learned from the divers because they could have acted like one...
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Dale replied to the thread B Which technique has been used? (drowning victim recovery in a lake).A body would have a less dramatic change in acoustic impedance than a rock or even wood. So you could probably make that distinction by...
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Dale reacted to pqp's post in the thread Job Skills Degrees with actual guaranteed jobs after graduation? with
Skeptical.
Yes, but sooner or later you will have to pay those student loans and if you have a low paying job that won't help you at all. You'll... -
Dale reacted to osilmag's post in the thread Job Skills Degrees with actual guaranteed jobs after graduation? with Like.
Education. I teach physics at the high school level.
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Dale reacted to osilmag's post in the thread Job Skills Degrees with actual guaranteed jobs after graduation? with Like.
Whoa. You have more perseverance than me. I switched careers after 3 grad school and ~300 engineering application rejections (sprinkle...
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Dale reacted to renormalize's post in the thread A The Causal Bootstrap Paradox in General Relativity with Like.
Sorry, I don't see the difference. Using your logic, why can't I just as well say about Maxwell electromagnetism that...
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Dale reacted to gwnorth's post in the thread Job Skills Degrees with actual guaranteed jobs after graduation? with Like.
As an update to my post yesterday, they got the job. Is it a forever job? No, but it leverages skills that they have (3D Printing)...
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Dale reacted to Ibix's post in the thread I Theoretically, can perfectly flat spacetime exist in the Universe? with Like.
This is not correct. As already discussed in this thread, a spherical shell of matter in an otherwise empty universe has flat spacetime...
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Dale replied to the thread A The Causal Bootstrap Paradox in General Relativity.Not really. Many times, for instance, in statics, the acceleration is 0 at time t and that acceleration is what determines the forces at...