Sciencemadness Discussion Board

What are these?

TheMrbunGee - 8-10-2018 at 11:47

What are these? They are conductive, somewhat. and there is a difference in resistance between colors.

RIMG0037.JPG - 2.7MB RIMG0036.JPG - 2.8MB
Only one marked. others have handwritings on them, numbers.
RIMG0035.JPG - 4.1MB

fusso - 8-10-2018 at 12:05

Some kind of electrodes?

TheMrbunGee - 8-10-2018 at 12:06

Quote: Originally posted by fusso  
Some kind of electrodes?


yea, that is what I am thinking, but the shape seems weird.

unionised - 8-10-2018 at 12:54

The shape would make sense if the middle (thin) bit is meant to get hot when you pass a current through it.
Anyone else got any ideas?

What size are they?


RogueRose - 8-10-2018 at 13:18

I'd say electrodes of some kind as well or maybe heating elements of some kind or reisitors.? Possibly even some kind of extremely high amperage diode used for power lines?
Yeah a size or comparison would be helpful. I was thinking they were about 12"-15" long and maybe 3/8-1/2" diam in the center part?

[Edited on 10-8-2018 by RogueRose]

Ubya - 8-10-2018 at 13:22

i know what they are, i searched for them some time ago, they are molybdenum disilicide heating elements, they get hotter than any other type of heating element, very good for really high temperature kilns (without using electric arc technology)

Vomaturge - 8-10-2018 at 14:43

My initial thought was maybe a sample of some experimental metal, in an appropriate shape for a tensile strength tester (by the way, I'm not affiliated with that company). But it seems unlikely that you'd have found an untested specimen for sale or just laying around.

I too would like the dimensions. How conductive is "somewhat"- a milliohm, a few hundred milliohms, a few whole ohms? More crucially, where did you find these thingies?

TheMrbunGee - 10-10-2018 at 01:26

Hey, thanks for the answers!

I attached a photo with measurements..

Looks more like molybdenum disilicide heating elements. looks like composite material, not like a pure metal..

And not a diode, because resistance is the same both ways.

RIMG0043.JPG - 2.1MB