Janus's latest activity
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Janus replied to the thread An "Untranslatable" Word?.I am of Finnish descent and grew up in a region of Northern Minnesota, where people of Finnish descent made up roughly 1/5 of the... -
Janus replied to the thread What force causes precession?.Maybe this image taken from an old Physics text may help.
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Janus replied to the thread Undergrad Another Time Dilation Question.He would not physically "see" a pancaked planet, that is something inferred by applying Relativity. What he would physically see is...
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Janus replied to the thread Today I Learned.Not quite that old, but it was a bit small, just a two-seater...
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Janus replied to the thread Today I Learned.TIL that the Piper PA-38 Tomahawk, the plane that I took my initial flight lessons and solos in ( over 40 decades ago), is, on two...
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Janus replied to the thread Are these rabbit pellets???.Definitely look like rabbit pellets. We raised a few rabbits when I was in High school, and they look very familiar. If you have a...
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Janus replied to the thread How effective is nuclear propulsion?.Given that this type of engine have about twice the exhaust velocity of the Shuttle's main engines, then if you were able to substitute...
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Janus replied to the thread How effective is nuclear propulsion?.To reach Alpha Centauri in 100 years, you would need to reach a speed of least 0.043 c (12900000 meters/sec) Given the exhaust velocity...
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Janus replied to the thread How effective is nuclear propulsion?.For simplicity's sake, we will assume a shuttle in orbit with a fully fueled external tank. IOW, we won't factor in the Solid fuel...
