Alt-BEAM Archive
Message #07345
To: beam@sgiblab.sgi.com beam@sgiblab.sgi.com
From: cbrenizer cbrenizer@mail.trib.net
Date: Wednesday, November 03, 1999 10:13 AM
Subject: Re: aquabots - 'sealed' motor
>although i don't doubt that the bulb could have had lower pressure inside,
>the force of the flame and or gravity must be considered as well. either
>could cause a 'drip' of the glass envelope if the top or side of the bulb
is
>melted.
>
>now if you could evenly heat the glass and the bulb 'shrank', (might be
hard
>to do without the bulb elongating)....
>
>it seems another simple way to test for lack of atmosphere would be to
>figure out how to open the bulb underwater and watch for any kind of gas
>bulb escaping. it won't tell you what kind of gas but will indicate it's
>existence. a very small bubble or none at all would indicate an evacuated
>envelope.
>
>
>Þ-:
>opcodejoe@mail.trib.net
>ICQ# 11118760
>-----Original Message-----
>From: Jaroslav 'Lord Slayer' Pelan
>To: beam@sgiblab.sgi.com
>Date: Wednesday, November 03, 1999 7:39 AM
>Subject: RE: aquabots - 'sealed' motor
>
>
>hello,
>hmm, but it went into the bulb, which proves that there's vacuum in
>there.
>these bulbs are common here. - i mean a 230V bulb, not the little
>ones
>
>JP
>
>> This is caused because you heated the gas inside the bulb. The gas expand
>> because of this.
>>
>> Bram van Zoelen
>> Robotics, kites, personal and more
>> http://vsim.freeservers.com
>> http:/beam.to/vsim
>>
>> E-mail
>> vsim@mail.com
>> vsim@vsim.freeservers.com
>>
>>
>
>> hello,
>> > Depends. Some have gasses like Argon or Xenon in them (just to name a
>> > couple). Xenon is usually used for flash bulbs, though.
>> > Peace out!
>>
>> but there has to be some sort of under pressure. When i used a
>> little torch and heated the bulb, the almost melted glass went into
>> the bulb and formed something like stalactite.
>>
>> Sleep well ...
>>
>
>
>
>The EviL DaRKloRd SlaYEr
>
Home