[pure-silver] Re: Now this really an Off Topic question..
- From: <C.Breukel@xxxxxxx>
- To: <pure-silver@xxxxxxxxxxxxx>
- Date: Thu, 26 Nov 2009 10:47:59 +0100
Hi Bob,
Thanks for the quick feedback. I am pretty ignorant on cars, sound like
a lot of trouble..;-).. There are alternatives: the traditional one is
to have a window in the box covered with ruby lith, which you than point
to a bright lit area outside, but I work in my trunk, so I figured that
that might not always be handy.
Naively I thought why than not use my car battery...
I'll look into red bicycle lights or something running on batteries
next,
Thanks,
Cor
-----Original Message-----
From: pure-silver-bounce@xxxxxxxxxxxxx
[mailto:pure-silver-bounce@xxxxxxxxxxxxx] On Behalf Of Bob Younger
Sent: donderdag 26 november 2009 10:23
To: pure-silver@xxxxxxxxxxxxx
Subject: [pure-silver] Re: Now this really an Off Topic question..
Cor,
There are too many variables to answer that question (age of battery,
size,
size of bulb, remaining charge on battery, temperature......). But to
solve
the problem; get a second battery and a battery isolator. It will
prevent
your primary starting battery from draining other than to start the car,
while providing power to your red light and other accessories from the
secondary battery. It will then allow the car's charging system to
charge
both batteries. You can buy the parts yourself and install them; or have
a
mechanic install them. There is another device (and hence, alternative)
on
the market that monitors how much charge remains in your battery and
prevents you from draining it beyond the point that it has sufficient
power
to start your car.
Bob Younger
-----Original Message-----
From: pure-silver-bounce@xxxxxxxxxxxxx
[mailto:pure-silver-bounce@xxxxxxxxxxxxx] On Behalf Of C.Breukel@xxxxxxx
Sent: Thursday, November 26, 2009 1:11 AM
To: pure-silver@xxxxxxxxxxxxx
Subject: [pure-silver] Now this realy an Off Topic question..
I have this really off topic question, there is a faint connection to
pure
silver though..;-)..
Since a year or so I am quite heavy into wet plate collodion
photography,
I'll spare you the details, but basically you prepare and process a
light
sensitive plate with silver halides (see pure
silver..;-)..) in the field.
After exposure plates have to be developed immediately, so you need a
what
is called a darkbox. Since the emulsion is only sensitive to blue and a
bit
of green light you can work under red light. I am building this box in
my
car.
Now my question is: how long can you run a low wattage (red) bulb from
your
car battery before you drain said battery and are unable to start the
car
again?
Thanks,
Best,
Cor
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