Nichts....Ich konnen nicht gelesen!
Ray White
Neff Packaging Solutions
1700 Watterson Trail
Louisville, KY 40299
Tel: 502-491-1820 ext.330
Fax: 502-491-7701
www.neffpackaging.com
Marta Edie
<martaedie at mac.com> To:
macgroup at erdos.math.louisville.edu
Sent by: cc:
owner-macgroup at erdos.math.lou Subject: Re:
MacGroup: High speed access newbie
isville.edu
01/28/2005 09:48 AM
Please respond to macgroup
Oh-Lee and Ray - how can you challenge an almost 80yr old woman with
all that physics on a morning before she had her coffee! - Since I
shall be with the Lord or in that distant land rather sooner than later
I shall submit to the assertion that eternity is like a day or a second
or a blink of an eye , an Augenblick or totally outside the measure of
time, but hope to have a device up there, or perhaps down there, to
keep participating in your email exchanges. You know what? I went down
to the basement and looked up my old German highschool Physics book to
read about the speed of light!. Anybody wants an antique like that ? I
can add the book on Chemistry for good measure.
Marta
On Jan 28, 2005, at 9:06, RWhite at neffpackaging.com wrote:
>
>
>
>
> In a vacuum, light always travels at a speed of 299,792,458 meters per
> second, no matter how its speed is measured.
> ...Just in case anyone was think that m/s was miles per second!
>
> Ray White
> Neff Packaging Solutions
> 1700 Watterson Trail
> Louisville, KY 40299
> Tel: 502-491-1820 ext.330
> Fax: 502-491-7701
> www.neffpackaging.com
>
>
>
>
> Lee Larson
> <leelarson at mac.com> To:
> macgroup at erdos.math.louisville.edu
> Sent by: cc:
> owner-macgroup at erdos.math.lou Subject:
> Re: MacGroup: High speed access newbie
> isville.edu
>
>
> 01/28/2005 08:57 AM
> Please respond to macgroup
>
>
>
> On Jan 28, 2005, at 12:19 AM, Nelson Helm wrote:
>
>> I read that persons standing on the sidewalk below hear Big Ben, the
>> bell at the Houses of Parlement, after Australian listeners to the
>> BBC. Signal goes to Australia at speed of light, in less time than to
>> sidewalk at speed of sound.
>
> Being my usual persnickety self, I checked the facts, and you're right.
> (Google knows everything!)
>
> Big Ben is 106 m tall, so it takes the sound about 0.3 s to reach the
> ground at 340 m/s.
>
> The mean circumference of the earth is 12,742 km and the speed of light
> in a vacuum is 299,792,458 m/s. As a worst case, Australia is halfway
> around the world, so use 6500 km as the distance from London to
> Australia, giving 0.02 s as the time to get there.
>
> Light is quick, but not quick enough to help satellite broadband. A
> satellite in geostationary orbit is 35,768 km above the equator. It
> takes at least 0.12 s to get a signal there. Since we're talking
> round-trip time, this is about a quarter second to squirt something up
> there and get it back.
>
> I've tried satellite broadband.
>
> It works great for downloading big files because once the file starts
> coming, it comes really fast.
>
> Using a terminal is pretty frustrating because the echo of what you've
> typed takes at least a half second to appear.
>
> Complex Web pages are made up of dozens, or even hundreds of little
> pieces. You can watch in slow motion as your computer requests them and
> they arrive. The satellite broadband companies are fighting the latency
> by caching commonly requested pages so they can send all the pieces at
> once without waiting for the individual requests.
>
> Email is OK because you just get it all in one shot, so the half second
> isn't noticeable.
>
>
>
> | The next meeting of the Louisville Computer Society will
> | be January 25. The LCS Web page is <http://www.kymac.org>.
> | List posting address: <mailto:macgroup at erdos.math.louisville.edu>
> | List Web page: <http://erdos.math.louisville.edu/macgroup>
>
>
>
>
>
> | The next meeting of the Louisville Computer Society will
> | be January 25. The LCS Web page is <http://www.kymac.org>.
> | List posting address: <mailto:macgroup at erdos.math.louisville.edu>
> | List Web page: <http://erdos.math.louisville.edu/macgroup>
| The next meeting of the Louisville Computer Society will
| be January 25. The LCS Web page is <http://www.kymac.org>.
| List posting address: <mailto:macgroup at erdos.math.louisville.edu>
| List Web page: <http://erdos.math.louisville.edu/macgroup>
| The next meeting of the Louisville Computer Society will
| be January 25. The LCS Web page is <http://www.kymac.org>.
| List posting address: <mailto:macgroup at erdos.math.louisville.edu>
| List Web page: <http://erdos.math.louisville.edu/macgroup>
