phyzguy's latest activity

I would expect that Li-ion will continue to dominate in vehicles, where weight is paramount, but that Na-ion will eventually be the...

I saw the mirror lab at the University of Arizona when I was enrolled there. Very cool!

You do get 2, but you can't split the state up into a product of two states each with a value 1 for the number operator. That's what it...

It's perfectly valid for localizing something "on the sky", as I said. Obviously it doesn't define where it is in the third dimension...

Sorry, what is wrong with, "Something located in the constellation X."? That is a valid statement that locates something on the sky.

Euclid's Elements were written in 300 BC, more than 2300 years ago. Should we throw out geometry because the theory is so old?

I can see that now thanks. I therefore plot Pioneer 10's heading to be within the borders of Hercules (red symbol) and Pioneer 11's to...

Surely given the alpha and delta coordinates in Table 1 of the paper you cited you can plot those points on the star map. If not, what...

Why would anyone do that? Is there reason to doubt scientists from JPL and the Max Planck Institute? If you doubt them, you could try...

I think @Cerenkov in his initial post just wanted to know approximately where they are headed. In terms of the motivation for writing...

Of course. In the paper in the OP, they extrapolated ahead about 10 MYr, using the known positions and velocity vectors of the nearby...

If that's what you want, that's pretty easy. In Table 1 of the paper you quoted in the OP, alpha and delta are the Right Ascension and...

The fact that "if two quantities are equal and you do the same thing to both of them then they are still equal" seems pretty elementary...

Table 1 of the paper you linked gives you the velocities of the spacecraft in the ICRF coordinate system, which is centered on the sun...

Yes. Correction made.