Janus's latest activity
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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... -
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... -
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... -
Janus replied to the thread An "Untranslatable" Word?.While Finnish does have words for "yes" and "no" It also does something similar. So for example, The question Maalaatko taulua?" ( Are... -
Janus replied to the thread An "Untranslatable" Word?.The word "Sisu" in Finnish comes to mind. One attempt that tries to define it goes like this " Extraordinary determination, courage and... -
Janus replied to the thread Convert Circular motion into figure-8 shaped loop.Of course, now you inspired me to do a more physics engine driven example. In this animation, the boxes actually constrain the cylinder... -
Janus replied to the thread Convert Circular motion into figure-8 shaped loop.Since the original animation was just to show the basic idea, I didn't include those types of restraints as it would be simple to do... -
Janus replied to the thread Convert Circular motion into figure-8 shaped loop.The top one was done using armatures, which act like a chain of bones, in this case, 2 bones. The base of the chain is parented to the... -
Janus replied to the thread Undergrad Light clock treating horizontal and vertical motion differently?.While a postulate is not a fact, it we can make predictions as what would happen if it were true. This, in turn allows us to devise real... -
Janus replied to the thread Today I Learned.A problem that arises when is comes to languages that are not native to you is that, not only do they have sounds that can be hard to... -
Janus replied to the thread Convert Circular motion into figure-8 shaped loop.Yes, done with Blender. -
Janus replied to the thread Convert Circular motion into figure-8 shaped loop.Two methods I came up with from tracing out figure 8s. The first produces a somewhat uneven one as is, but you can slightly adjust the... -
Janus replied to the thread Merry Christmas.We had my daughter and her partner over for dinner last night and had the TV tuned to a channel that was playing Christmas music on in... -
Janus replied to the thread High School Why is the constant speed of light so unique?.The basic idea for the SOL in a vacuum is that it is invariant. Its speed relative to you as measured by you is always the same. So...



