Learn to Create a Robotic Device Using Arduino in the Free Webinar. Register Now
One of our academic counsellors will contact you within 1 working day.
Click to Chat
1800-1023-196
+91-120-4616500
CART 0
Use Coupon: CART20 and get 20% off on all online Study Material
Welcome User
OR
LOGIN
Complete Your Registration (Step 2 of 2 )
Free webinar on Robotics (Block Chain) Learn to create a Robotic Device Using Arduino
30th Jan @ 5:00PM for Grade 1 to 10
Quantum Mechanical Liquid Quantum Mechanical Liquid
Quantum Mechanical Liquid
Quantum Mechanical Liquid: - Liquid helium is unique in that it exists in two forms He I and He II (liquid helium is obtained by joule-Thomson expansion of the gas previously cooled to 15K which is below the inversion temperature of He i.e., 35K). The liquid helium I boils at 4.2K and has normal liquid properties. One cooling he I to 2.19 K and 38 mm pressure, it changes to He II with abrupt changes in many physical properties such as density, dielectric constant and specific heat. He II is super fluid having so low energy that thermal motion of atoms do not take place, however, interatomic forces are also so weak that it does not occupy solid state. Thus He II is liquid with properties of gas. It has following characteristics:- (i) It has very high heat conductance -600 times of copper. (ii) It has very low viscosity – 1/100 of H2 gas. (iii) It has very flat meniscus – a low surface tension and creeps over the surface of glass container.
Quantum Mechanical Liquid: - Liquid helium is unique in that it exists in two forms He I and He II (liquid helium is obtained by joule-Thomson expansion of the gas previously cooled to 15K which is below the inversion temperature of He i.e., 35K). The liquid helium I boils at 4.2K and has normal liquid properties. One cooling he I to 2.19 K and 38 mm pressure, it changes to He II with abrupt changes in many physical properties such as density, dielectric constant and specific heat. He II is super fluid having so low energy that thermal motion of atoms do not take place, however, interatomic forces are also so weak that it does not occupy solid state. Thus He II is liquid with properties of gas. It has following characteristics:-
(i) It has very high heat conductance -600 times of copper.
(ii) It has very low viscosity – 1/100 of H2 gas.
(iii) It has very flat meniscus – a low surface tension and creeps over the surface of glass container.
Post Question
Dear , Preparing for entrance exams? Register yourself for the free demo class from askiitians.
points won -