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heat sensative liquid?

hello, i recently saw a tv program which showed a glass coffee table surface which when touched reacted with a colour c...
1 comments posted 21yrs
posted by newsgroupaddress
1 comments posted 21yrs posted by newsgroupaddress

etching stencil material needed

hello, i hope there is someone outthere who can help....i am trying to find a material which i can use to cut stencils...
0 comments posted 21yrs
posted by newsgroupaddress
0 comments posted 21yrs posted by newsgroupaddress

polishing, identifying, storing silver

Subject: polishing of silver; best storing protectant of silver Date: Thu, 10 Mar 2005 02:18:57 -0600 From: Archimedes...
8 comments posted 21yrs
posted by a_plutonium
8 comments posted 21yrs posted by a_plutonium

tell if it has silver by amount of tarnish

One test for silver is whether it has black spots on it. Almost a guaranteed sure sign that it is silver. But I am conf...
1 comments posted 21yrs
posted by a_plutonium
1 comments posted 21yrs posted by a_plutonium

copper and steel at 770C

If the surfaces are clean, there may be some diffusion bonding between copper and iron/steel, and between iron and stee...
1 comments posted 21yrs
posted by cgraham
1 comments posted 21yrs posted by cgraham

need help with chitosan question

Hi I'm looking for a microsphere about 1 to 10 um. The surface must be net positive charged. It does not matter what is...
1 comments posted 21yrs
posted by vinceman
1 comments posted 21yrs posted by vinceman

Interaction between iron and copper at 770 C

I'm planning to anneal a structure containing mild steel and iron above the Curie point of iron (769 C). This is for th...
0 comments posted 21yrs
posted by nospam
0 comments posted 21yrs posted by nospam

gel definition

in one definition, gel is defined as colloid with solid as a dispersing phase while liquid as a dispersed phase. is the...
0 comments posted 21yrs
posted by a
0 comments posted 21yrs posted by a

Glass Cover Slip for "high" pressure applications

Hi I'm developing a high pressure acrylic flow cell for microbiology studies. The flow cell has a hollow center that al...
3 comments posted 21yrs
posted by pcywong
3 comments posted 21yrs posted by pcywong

material for stator of electric machine

Hello I would like to know proper material for stator of electric machine. Please let me know what kinds of material wo...
2 comments posted 21yrs
posted by engtech1
2 comments posted 21yrs posted by engtech1

looking for curable/pourable rubber

I have an application where I need to seal a cylinder which passes through an aluminum block. It is a tight fit but not...
0 comments posted 21yrs
posted by akrem
0 comments posted 21yrs posted by akrem