It is shown that solid helium near the solidification curve at temperature T ≈ 1.3 K has the properties of a "jelly-like" substance with viscosity 10 2 –10 4 P. In the same conditions the surface of rotating solid helium (at a rate of linear crystal growth u < 10 3 cm/sec) acquires a concave shape.doi:10.1007/BF00119520Z. Sh. NadirashviliJ...
A phase diagram is a representation of the different physical states of a substance when it is subjected to various conditions of temperature and pressure. A phase diagram shows the regions where a substance is in a particular phase such as solid, liquid, or gas where the intersection between ...
When the solid rock changes form to a more liquid rock material, it becomes less dense than the surrounding solid rock. Because of this difference in density, the magma pushes upward with great force (for the same reason the helium in a balloon pushes up through the denser surrounding air ...
Outer space is an extremely cold environment and temperatures will vary drastically in different parts of the orbiter. You might think that heating the orbiter would be a problem. However, the electronic equipment generates more than enough heat for the ship. The problem is getting rid of the ...
For this reason, hot air exerts greater air pressure per particle than cold air, so you don't need as many air particles to build to the same pressure level. So a hot air balloon rises because it is filled with hot, less dense air and is surrounded by colder, more dense air. Balloon...
Most substances contract, or shrink, in volume as they get cold. Water only contracts until it is lowered to 39 degrees; at colder temperatures, it begins to expand. As the water gets colder, its molecules slow down and arrange themselves such that gaps exist between groups of molecules. As...
A balloon of mass 0.1 kg hovers over the ground because of its helium creating a buoyant force (FB). Use Newton's 2nd law to find the buoyant force acting on the balloon. Hot air rises because it has expanded. It then displaces a greater volume of cold air, which increases the buo...
Green Living Image Gallery Darmstadt Kranichstein, built in 1991, is the first passive house building and has been subject of extensive measurements. See more green living pictures. http://www.passivhaustagung.de Imagine living in a comfortable, modern house with no cold drafts, no temperature...
Wow! I don't even remember posting that! After watching it though I can see it is a rocket. It doesn't even seem like me to say it like that. very unusual. rawknexstuff16 years ago LIQUID HELIUM!!! SUPER COLD!!! oncex16 years ago My chemistry professor did that, but she placed...
Marsis a cold and barren desert today, but scientists think that in the ancient past, it was warm and wet. The loss of the early Martian atmosphere may have led to this dramatic change, and one of the prime suspects is the solar wind. Unlike Earth, Mars lacks a global magnetic field ...