# Tag Info

## New answers tagged materials

1

Though not a material consisting of individual molecules like e.g., glucose, try silicon carbide ($\ce{SiC}$). This material not only became popular because it is a good absorber of microwave reaction, but equally because of its high mechanical strength, high melting point, and low chemical reactivity. These render $\ce{SiC}$ you might heard about earlier (...

4

"If vacuum on a closed system can’t pull liquid, how can it pull gas?" It's back to that old thing: Gasses expand to fill the container, liquids don't. So the gasses will fill the entire container - reaching the vacuum, which will expel them, and then the remaining gas will do the same. But the liquid (the coke) will stay put, unless the pressure ...

14

Gasses don't get "pulled", they get "pushed". When you empty a neon tube, you attach a device with almost no air in it to mouth of the tube. The air that is in the tube then pushes itself into the device until the pressure is the same in both. Meanwhile, the device expels its air to produce more low pressure, and more of the relatively ...

1

Here is an idea based on the concept of a sacrificial anode. Per Wikipedia, to quote: A galvanic anode, or sacrificial anode, is the main component of a galvanic cathodic protection (CP) system used to protect buried or submerged metal structures from corrosion.They are made from a metal alloy with a more "active" voltage (more negative reduction ...

0

As to what process, material and/or measurement could be used, the same that exists for minting metal alloy coins. The material could be composed of said four (or more) alloys with the coin displaying an ID. The latter can be a mathematical function of associated chemical and electrical properties of said coin. For example, an alloy of Ni, Sn, Fe and Zn may ...

5

The OP asks: What process, material and/or measurement could be used? Answer: Snowflake maker, dihydrogen monoxide, photograph (with metric ruler included). "Snowflake maker" is a vapor condenser from steam onto a cooler surface or simply from the vapor. It is well-known that no two snowflakes are alike. The unscientific media (Ref 1) propose the ...

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