RE: [Leica] RE: film tape glue flash

["Carleton, Sam" <Sam.Carleton@FMR.COM>]

I still think:  Why risk it when there are scissors right there?

	-----Original Message-----
	From:	Jim Brick [SMTP:jim_brick@agilent.com]
	Sent:	Thursday, May 31, 2001 4:41 PM
	To:	leica-users@mejac.palo-alto.ca.us
	Subject:	[Leica] RE:  film tape glue flash

	In order for the flash from the tape to in any way fog your film,
you would
	have to have film with a 10,000,000 ISO.

	And it is "not" static electricity. It is atoms giving off light
energy
	(electron valence jump) when the glue molecules are ripped apart.
This is
	"electroluminescence" and is caused by the movement of electrons
within a
	substance from more energetic states to less energetic states,
giving off
	cold light as the energy medium. It is a minuscule amount.

	Jim


	At 03:23 PM 5/31/01 -0400, you wrote:
	>I too have seen it and it is static electricity.  This is why I
always keep
	>a pair of scissors around to cut the tape rather then rip it.
	>
	>	-----Original Message-----
	>	From:	Paul Chefurka 
	>	Sent:	Thursday, May 31, 2001 2:24 PM
	>	To:	'leica-users@mejac.palo-alto.ca.us'
	>	Subject:	RE: [Leica] Mistake #1487
	>
	>	Yep.  It's static electricity, and it happens all the time
when you
	>tear tape off a plastic surface.  I've never seen it damage a film.
	>
	>	Paul
	>
	>	-----Original Message-----
	>	From: V8PWR@aol.com [mailto:V8PWR@aol.com]
	>	Sent: Thursday, May 31, 2001 1:18 PM
	>	To: leica-users@mejac.palo-alto.ca.us
	>	Subject: Re: [Leica] Mistake #1487
	>
	>	I've noticed something strange when I roll some films for
	>developping .
	>	When I tear the green sticker , attaching the end of film to
the
	>reel ,
	>	it flashes a little bit , just like a short spark . 
	>	Weird and scary for the emulsion !
	>	Anyone noticed the same ?
	>
	>	JO GOODTIMES -FRANCE/ AIRBORNE RADAR TECH / LIVE FREE OR DIE
	>	will soon walk with mud covered combat boots...