Very tiny bubbles of air in a very thin walled ceramic matrix. In other words ceramic foam.
After the published tables the silica aerogel is a very good thermal insulator.
Yes. Aerogel is less dense than radon. I think it's also less dense than xenon. For a while I wondered about it too, but yes, a solid can float on a gas.
Pentane is 0.626 g/cm^3 at 25 C and one atmosphere. Hydrogen is 0.070 g/cm^3 at -253 C and one atmosphere.Read more: What_is_the_lowest_density_liquid_commonly_availablei did not wright this!
After the published tables the silica aerogel is a very good thermal insulator. A vacuum, as in devoid of any matter.
Sugar has many polar covalent bonds, in the C-O-H groups, and the molecules of sugar fit easily into the hydrogen bonded microstructure of liquid water.
NO
Etched mild steel --> you will be able to to see its microstructure under optical microscope Unetched mild steel --> you will not be able to see its microstructure under optical microscope. The microstructure between etched mild steel and unetched mild steel does not change. Etching only to make the microstructure visible.
No
regular (silica) aerogel is not lighter than air but SEAgel is a form of aerogel that is lighter than air
The most common use for Aerogel is for thermal insulation. Silica Aerogel has been used to help insulate the Mars Rover and protected all the wiring from the extreme temperatures it faces in outer space.
bill
the aerogel
The etchings that are used for revealing microstructure of steel rods is to reveal the microstructure of the metal through the selective chemical attack. The procedure is carefully followed in order to reveal the accurate microstructures.
The proper spelling is aerogel. It is not specially capitalized at the beginning or in the middle, nor should it contain a hyphen or a space. The word has been in technical usage since 1931 and is not a tradename or proper noun. Common incorrect spellings include "Aerogel', "AeroGel", "aero-gel", "aero gel", and alternative phonetic spellings such as "airojell" and "aerojell".
aerogel and styrofoam
Samuel Stephens Kistler
Aerogel is 39 times more insulating than the best fiberglass ever made.