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Search: Posts Made By: keith_d
Forum: Idle Banter 27-06-18, 08:59 AM
Replies: 24
Views: 1,821
Posted By keith_d
Re: Science

I've just found that we made something that goes even faster, though it took a gravitational slingshot around Saturn to get it up to speed.

Voyager 1 is currently heading into the outer reaches...
Forum: Idle Banter 24-06-18, 06:50 AM
Replies: 24
Views: 1,821
Posted By keith_d
Re: Science

Was that a precursor to the SR-71 Blackbird?? Shame there aren't any more of them flying. I was at an air show where one did a low pass on full afterburner - incredible.

BTW, the orbital speed of...
Forum: Idle Banter 22-06-18, 12:51 PM
Replies: 24
Views: 1,821
Posted By keith_d
Re: Science

In vacuum all the colours are equally fast, but in air red is slightly faster.

The calculation of wavelength dependent dispersion in a medium of refractive index 1.0003 is left as an exercise for...
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