Title: Re: [USMA:30201] Re: SpaceShipOne
I'd love to, but to whom? What are the chances that
the person who responds would respond from authority or just assume it is
statute. Just because someone works for NASA does not make them Rocket
Scientists. There are a lot there who are ordinary
While we're on the subject, whatever happened to the temperature display
at the tourist information center across the street from Parliament? I
remember a nice red Celsius-only display there years ago, but last
summer it was gone.
Hope someone isn't wimping out.
Nat
-Original Message-
Title: Re: [USMA:30201] Re: SpaceShipOne
That old 50 mile definition of the boundary of space was set
by the U.S. Air Force in the late 1950s or early 1960s, back when the X-15
rocket plane was flying (or just before it began flying). They awarded
astronaut wings to USAF pilots who flew
I would have thought the USAF would have used air miles. :-)
Seriously though, are not the USAF fully metric? I can only go by what I
have seen on TV, in the portrayal of the USAF in the series Stargate
SG1, where they were fully or almost fully metric, certainly did not use
miles but used
I watch that program too and I find them using a mix of SI and FFU. Some
episodes were more SI then others. I can't say for sure, but I think the
older ones were more FFU and the newer shows tend to be more SI.
But back to the discussion, it is obvious from the last two responses
everyone is
The author alternatively could have said 130 GPa, which is more consistent
with the common practice of stating tensile strength in MPa and GPa.
To put this into perspective, 130 GPa / 100 kPa = 1 300 000 atmospheres. I
won't be holding my breath for a space elevator any time soon!
On Saturday
I doubt that this is a NASA definition. It's probably an Air Force definition
so that they could call their pilots astronauts. The boundary between the
mesosphere and the ionosphere is about 90 km up. But then the ionosphere
extends for 200-300 km higher. Even at an altitude of about 400
While we're on the subject, whatever happened to the
temperature display
at the tourist information center across the street from
Parliament? I
remember a nice red Celsius-only display there years ago, but
last
summer it was gone.
Hope someone isn't wimping out.
I doubt that they're
Carbon nanotubes is the rationale.
Nat
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On
Behalf Of J. Ward
Sent: Sunday, 2004 June 27 12:47
To: U.S. Metric Association
Subject: [USMA:30233] Re: Space Elevator
The author alternatively could have said 130 GPa, which
Of mavi fibe
Can any of our European friends here respond
I need to talk to someone who's got good experience
with the satellite system called PAMSAT (digital,
MPEG-2).
Don't look to me here in the UK. I have not even hear of it. A UK google
search using the keyword 'pamsat' produced zero
Pete
Knight for an altitude of 280,500 feet.
Which means?
Maybe he meant PanAmSat. As in Pan-American
http://www.arianespace.com/site/news/releases/presrel00_06.html
PAMSAT is referenced in this Spanish language site from Honduras
http://www.unicah.edu/proyectos/981183/siete/
That may be the reason you can't find it in the UK Google site.
Euric
Could it be PanAMSat? There is a communications satellite (or a series of
them) by that name. -- Jason
- Original Message -
From: Terry Simpson [EMAIL PROTECTED]
To: U.S. Metric Association [EMAIL PROTECTED]
Sent: Sunday, June 27, 2004 10:43 AM
Subject: [USMA:30237] RE: Inquiry
Two points regarding my recent mention of the Space Elevator article:
(1) As J. Ward pointed out (see below), the unit could have been
specified in pascals (Pa) or one of the multiples of pascals (MPa or
GPa). It is correct to use either N/m^2 or Pa, but I will bow to Mr.
Ward on the matter of
2004 June 27
In USMA 30220 David wrote you can also use grams-force.
No you can not, not if you use SI.
Standard SI10 says in 3.3.3.1 Do not use old metric units such
as ... kilogram-force per square centimeter
and in C.6.1 The kilogram-force ... is not used.
Use
Of [EMAIL PROTECTED]
In USMA 30220 David wrote you can also use grams-force.
No you can not, not if you use SI.
[...]
Use of gram-force is a way to degrade accuracy in measurement and
continues the confusion of mass and weight.
Indeed.
The word 'weight' is old and predates our
If there is to be more discussion of the altitude at which space begins
or whether the TV show Stargate uses more SI or more Olde English,
please change the subject line on your messages and stop sending them
out under the subject SpaceShipOne.
Pat,
Can you tell us what drink sizes are available in
Australian pubs and how the sizes are advertised. Do pints still
exist? I heard the pint was rounded to 600 mL, is this
true?Are drinksever sold in pubs in bottles and/or cans?
Do they have generic glass sizes, like large, medium and
18 matches
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