Dale's latest activity
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Dale reacted to jbriggs444's post in the thread High School How Does Constant Power Affect Rocket Acceleration in Space? with
Like.
Oh dear. The conversation has apparently shifted away from the question of gear ratios to the matter of a failure to account for the... -
Dale reacted to wrobel's post in the thread High School Why higher speeds need more power if the backward force is the same? with Like.
I do not understand such questions. There is a definition: Power=##W=(\boldsymbol F,\boldsymbol v)##. There is a theorem: $$\dot...
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Dale reacted to PeroK's post in the thread High School How Does Constant Power Affect Rocket Acceleration in Space? with Like.
It's not wrong, but a rocket is a special case. See below. Everything accelerates at a constant rate for a constant application of...
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Dale replied to the thread High School Why higher speeds need more power if the backward force is the same?.Yes. Not on average, no.
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Dale replied to the thread High School Why higher speeds need more power if the backward force is the same?.Walk up some flights of stairs. Then the next time run up the same stairs. Which makes you more sweaty?
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Dale reacted to A.T.'s post in the thread Undergrad Can a Gyroscope in a Satellite Detect Orbit? with Like.
Additional note regarding the below illustration from the Stanford website: It's rather confusing to draw the arrows (gyro axis)...
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Dale replied to the thread Undergrad Can a Gyroscope in a Satellite Detect Orbit?.As @A.T. mentioned, there will be a deviation even for a non-rotating primary due to the curvature. A rotating primary will produce...
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Dale replied to the thread Undergrad Can a Gyroscope in a Satellite Detect Orbit?.The conclusion is yes. The above posts all explain why/how it can be done.
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Dale replied to the thread Undergrad Different Definitions of The Quality Factor.What is the intended purpose for using the Q factor?
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Dale replied to the thread Undergrad The rocket equation, one more time.Thanks, that is, a helpful way to follow up!
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I just came across a post in another thread, “Some thoughts about self-education“, where gleem wrote the following: “Sometimes, after...
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Dale replied to the thread Physics How to close the gap: From Independent Research to Academic Discourse.I am going based on your own description of your work. Have you described it accurately? If your description is accurate then my...
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Dale replied to the thread Physics How to close the gap: From Independent Research to Academic Discourse.I want to emphasize this. IMO, this is the big problem with the OP's efforts. They are deliberately disconnecting their work from the...
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Dale reacted to PeroK's post in the thread Physics How to close the gap: From Independent Research to Academic Discourse with Like.
When I say all the crackpots are working on unification theories, that's not the same as saying all people working on unification...
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Dale reacted to PeroK's post in the thread Physics How to close the gap: From Independent Research to Academic Discourse with Like.
Let's suppose I became an editor and to begin with I took every submission seriously. I would read them fully and give the author a...