Hi mgb!
Thank you for the quick response.
The camera does have an AV out, but we have no space on the wall (shelves) or the bench to put an LCD monitor, otherwise this would have been the ideal option.
We can see the display well enough, but when you are looking at 293T cells, it's a...
Hello all!
Again I am a lost molecular biologist in the realm of physics, but this question shouldn't be so difficult!
We are using an Olympus microscope to take pictures of our live cultures here in the lab and we have a real REAL old nikon attached to it to take pictures. I want to be...
OK guys, so assuming I attach the GND from the sensor to the node connecting the two batteries, where should I attach the GND from the multimeter? To the same node?
And thanks a lot for the advice guys, you've been very helpful!
This project just can't get a break!
In trying to refit the system, one of the pins coming out of the sensor has snapped at the root. No soldering will save this tiny pin. I'll need to order a new one.
Hey Proton, I've drawn up this diagram for the new system. Does it look right in terms...
Great! I've got the 180K resistor already, just need to get the second supply.
Thank you so much for the help proton! I'll give it a whirl and see what happens!
Ahh yes I didn't catch that at first, thanks for pointing that out proton soup!
So without having to get those extra parts for the single supply, what could I use for a -Vs? Another 9V?
edit: I did a google search and found this: http://www.kpsec.freeuk.com/powersup.htm#dual
Is that...
Ahhh! More problems!
So the good news is that after a day in the lab and testing out the probe, it is water tight and doesn't seem to degrade in the propanol in the time span that we use it.
Bad news is that this thing will NOT read any temp. below 0C!
I've been poring over the...
hey chemisttree, thanks a lot for the very informative post!
I went over to ACE last night to try to find some RTV silicone, but alas it was a shot in the dark. I did, however, find a solution which seems to be holding up.
I describe it here...
Hey all! I found a solution (though we'll see how long it lasts!)
I went over to ACE last night and just roamed the aisles for things I might be able to use. Eventaully I came across some vinyl tubing that they have in the back (similar to the stuff that covers a CAT5 cable).
Esentially...
Technically only the sensor would need to be submerged, but its small enough that just keeping the sensor and not the leads submerged would be near impossible. Even if I were to position the sensor so that only it is sumberged, the propanol bath will be spinning, and there is a great chance...
I have a friend who is a botanist and, interestingly, he suggested that small amounts of chlorine is actually GOOD for plants.
But, this is for plants in standing water, not planted in soil (ie in a vase). A drop of chlorine will keep them healthier for longer. Not sure if that's true, but...
Hmm...assuming I insulate the leads with some electrical tape before wrapping in the copper foil, that could work. But i'd like the apparatus to be as flexible as possible, so the stiffnness that it would induce on the wire might be an issue.
Once I get in the lab tommorow I'll have some...
Yeah, I've posted in the chemical engineering section, hopefully someone there will have a solution.
I keep checking up on the epoxy, it actually is holding up well (much better than teh otehr options).
I'll give a crack at heatshrink and see what it does for the system...
Hello,
I'm trying to figure out how to seal a circuit as described in this thread:
https://www.physicsforums.com/showthread.php?p=2068433&posted=1#post2068433
My question to you chemical engineers, do you guys know of any sort of bonding material (like epoxy) which will not dissolve in...