Recent content by tze liu

is Mutation /evolution as a result of quantum jump? and is it possible that the collapse of the quantum state alters the nucleotide sequence of the genome of some creatures. thank you ! <mentor moved the thread from Biology to Quantum Physics>

i don't understand the detail of the explanation in the video unfortunately it is why i get stuck :(

There is one problem. Even they use a ring instead of a shell,this doesn't means all electrons inside the ring has a parameter b respect to the center. Why all the electrons inside the ring are assumed to have the same parameter b here?

Recently i watch a video about Thermal Bremsstrahlung. and i don't understand the explanation that they use a ring instead of disk in 6:02 to 7:06. (1)how did he divided the set of electrons up into in two sets of velocities that are all in the same direction and sum over all of the different...

Closed constant volume has no pv work but seems there may have other type of work done?

how are u know it is correct. because it seems they assume it is reversible here? Cp=(dQrev/dT)p =T(dS /dT)p however, if the dQ is not dQrev (for example: Cp=(dQ/dT)p) this relationship seems to be wrong?

constant pressure doesn't imply the heat transfer is reversible? that means Cp=(dQ/dT)p less or equal to T(dS /dT)p

seems in this charter, they use the same logic where ds T=dQ again here

8did they make mistake again?

the example in my textbook implies that dQ is reversible but forget to use dQrev?

but the definition of heat capacity is not dU/dt but dQ/dt~~

do u think the Q in the textbook here is wrong also?

thank you i get confused in this part also did they do something wrong? for example Cv=(dQ/dT)v=T(dS/dT)v however this is true only for reversible process but the question doesn't state it is reversible

oh i see what causes the transfer of heat? the different temperature between the gas and the system boundary created a heat flow?