PeroK's latest activity

Whereas I think they are vastly different - the difference between using the pre-existing resources and industrial capabilities of a...

I feel this reply may be a setup for an old SF reader, but will take the bait. SF author Robert Heinlein in 1966 posited a future Lunar...

Doubtful, there is just no economic reason to. All other exploration and colonization was generally tied to a solid economic thesis. If...

Perhaps, but ##y = f(x - vt)## is a function of two variables. You need either an animation, or to have an additional ##t## axis...

Note that, in general, if ##a > 0## and ##g(x) = f(x-a)##, then ##g(x)## is ##f(x)## translated to the right. One way to see this is to...

Another example: consider the function ##f(x)=x^2##, whose graph is a parabola opening upwards, with its vertex at ##(x,y)=(0,0)##. For...

In fact, it was once thought that flying can be curative...

PS I've shown two points on the wave (P and Q) at times 0 and 1.

That's not two graphs! This is what the graphs of ##y = x## and ##y = x-1## look like.

PS the same goes for a Moon Base. Who is going to make that a commercial priority? If and when that happens is impossible to predict.

The problem is that no one knows how fast technology in a certain area will develop. Extrapolating from the past is not possible...

It's a rightward moving wave for ##v > 0##. At ##t =0##, the wave takes the form of ##y = f(x)##. Choose a function ##f##. Something...

Maybe the Moon would make a good penal colony, like Britannia's Botany Bay, or Van Diemens Land in Australia, or France's Devil's Island...

The poll question could be a trick question and actually be about radical expansion of the human lifespan. :wink:

This is where we were before 1976: By that logic we should be on Mars by now.