a hero passes

"muff528" wrote:

"William R Thompson" wrote:

(about Wally Schirra's elapsed time in space)

Sigma 7: 9 hours 13 minutes 11 seconds
Gemini 6: 25 hours 51 minutes 43 seconds
Apollo 7: 260 hours 9 minutes 3 seconds

which adds up to 295 hours 13 minutes 57 seconds.

Is that taking relativistic time dilation into consideration? That's got
to be good for a -second or -two!

At orbital speed (about 8 km/sec) time dilation doesn't even
amount to one second over 295 hours. If I've crunched the
number right, it's in the microsecond range.

--Bill Thompson

William R Thompson wrote:
"muff528" wrote:

"William R Thompson" wrote:

(about Wally Schirra's elapsed time in space)

Sigma 7: 9 hours 13 minutes 11 seconds
Gemini 6: 25 hours 51 minutes 43 seconds
Apollo 7: 260 hours 9 minutes 3 seconds

which adds up to 295 hours 13 minutes 57 seconds.

Is that taking relativistic time dilation into consideration?
That's got to be good for a -second or -two!

At orbital speed (about 8 km/sec) time dilation doesn't even
amount to one second over 295 hours. If I've crunched the
number right, it's in the microsecond range.

--Bill Thompson



If it's NASA, maybe they've mixed metric and SAE units ?





--

Cheers

Dave Kearton

"Dave Kearton" wrote:

William R Thompson wrote:

"muff528" wrote:

"William R Thompson" wrote:

(about Wally Schirra's elapsed time in space)

Sigma 7: 9 hours 13 minutes 11 seconds
Gemini 6: 25 hours 51 minutes 43 seconds
Apollo 7: 260 hours 9 minutes 3 seconds

which adds up to 295 hours 13 minutes 57 seconds.

Is that taking relativistic time dilation into consideration?
That's got to be good for a -second or -two!

At orbital speed (about 8 km/sec) time dilation doesn't even
amount to one second over 295 hours. If I've crunched the
number right, it's in the microsecond range.

If it's NASA, maybe they've mixed metric and SAE units ?

No, although they did give the orbital speed in furlongs per fortnight.

I made the time-dilation factor as about 0.999999999644 (square
root of 1 minus beta-squared), with Schirra spending about 1062000
seconds in space at orbital speed and beta equal to 8 km/sec over the
speed of light (close enough to 300,000 km/sec). Schirra would have
lost about 400 microseconds.

--Bill Thompson

William R Thompson wrote:
"Dave Kearton" wrote:

William R Thompson wrote:

"muff528" wrote:

"William R Thompson" wrote:

(about Wally Schirra's elapsed time in space)

Sigma 7: 9 hours 13 minutes 11 seconds
Gemini 6: 25 hours 51 minutes 43 seconds
Apollo 7: 260 hours 9 minutes 3 seconds

which adds up to 295 hours 13 minutes 57 seconds.

Is that taking relativistic time dilation into consideration?
That's got to be good for a -second or -two!

At orbital speed (about 8 km/sec) time dilation doesn't even
amount to one second over 295 hours. If I've crunched the
number right, it's in the microsecond range.

If it's NASA, maybe they've mixed metric and SAE units ?

No, although they did give the orbital speed in furlongs per
fortnight.

I made the time-dilation factor as about 0.999999999644 (square
root of 1 minus beta-squared), with Schirra spending about 1062000
seconds in space at orbital speed and beta equal to 8 km/sec over the
speed of light (close enough to 300,000 km/sec). Schirra would have
lost about 400 microseconds.

--Bill Thompson



African or European ?




--

Cheers

Dave Kearton

"Dave Kearton" wrote in message
...

If it's NASA, maybe they've mixed metric and SAE units ?


What's the metric unit for time?

Steven P. McNicoll wrote:
"Dave Kearton" wrote in message
...

If it's NASA, maybe they've mixed metric and SAE units ?


What's the metric unit for time?



It's one I got sucked into badly on April 1, 1974 when it was announced on
the radio that the Victorian public service was switching over to metric
time.


It's an assortment of decidays, decadays, millidays and hectodays.



It made sense to my trusting, 16 yo brain and so I repeated what I had heard
as soon as I got to school.



Damn, it was several megadays before I heard the end of it.



Who's laughing now, a Nigerian general is making me a millionaire, so all
you losers out there, eat my dust.




--

Cheers

Dave Kearton

"Dave Kearton" wrote in message
...
No, although they did give the orbital speed in furlongs per
fortnight.

I made the time-dilation factor as about 0.999999999644 (square
root of 1 minus beta-squared), with Schirra spending about 1062000
seconds in space at orbital speed and beta equal to 8 km/sec over the
speed of light (close enough to 300,000 km/sec). Schirra would have
lost about 400 microseconds.

--Bill Thompson



African or European ?



Oh Monty Python, I thought it was about time for another appearance........
Good one and well thought.

Bruce R

"William R Thompson" wrote in message
ink.net...
"Dave Kearton" wrote:

William R Thompson wrote:

"muff528" wrote:

"William R Thompson" wrote:

(about Wally Schirra's elapsed time in space)

Sigma 7: 9 hours 13 minutes 11 seconds
Gemini 6: 25 hours 51 minutes 43 seconds
Apollo 7: 260 hours 9 minutes 3 seconds

which adds up to 295 hours 13 minutes 57 seconds.

Is that taking relativistic time dilation into consideration?
That's got to be good for a -second or -two!

At orbital speed (about 8 km/sec) time dilation doesn't even
amount to one second over 295 hours. If I've crunched the
number right, it's in the microsecond range.

If it's NASA, maybe they've mixed metric and SAE units ?

No, although they did give the orbital speed in furlongs per fortnight.

I made the time-dilation factor as about 0.999999999644 (square
root of 1 minus beta-squared), with Schirra spending about 1062000
seconds in space at orbital speed and beta equal to 8 km/sec over the
speed of light (close enough to 300,000 km/sec). Schirra would have
lost about 400 microseconds.

--Bill Thompson



From his point of view didn't *we* lose the ~400ms ?

"Dave Kearton" wrote:

William R Thompson wrote:

I made the time-dilation factor as about 0.999999999644 (square
root of 1 minus beta-squared), with Schirra spending about 1062000
seconds in space at orbital speed and beta equal to 8 km/sec over the
speed of light (close enough to 300,000 km/sec). Schirra would have
lost about 400 microseconds.

African or European ?

Before I can answer that, I'll have to determine whether or
not all four hundred of them float or sink in water. Making that
measurement for microseconds could take a little time.

--Bill Thompson

"muff528" wrote:

"William R Thompson" wrote:

I made the time-dilation factor as about 0.999999999644 (square
root of 1 minus beta-squared), with Schirra spending about 1062000
seconds in space at orbital speed and beta equal to 8 km/sec over the
speed of light (close enough to 300,000 km/sec). Schirra would have
lost about 400 microseconds.

From his point of view didn't *we* lose the ~400ms ?

Yes, but it's all relative.

--Bill Thompson