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What are the two primary obstacles causing energy loss as heat in normal conductors?
Who first observed the sudden vanishing of electrical resistance and at what approximate temperature?
If a material in a superconducting state exceeds which three critical parameters, will it immediately revert to its normal, resistive state?
What mediates the attractive force that allows electrons to form Cooper pairs despite their natural repulsion?
How do Cooper pairs behave quantum mechanically compared to individual electrons below $T_c$?
Why does the collective condensation of Cooper pairs below $T_c$ result in exactly zero resistance?
How does a superconductor cooled in a magnetic field differ from a hypothetical, perfectly conducting material upon cooling?
The complete exclusion of magnetic flux characteristic of a superconductor cooled below $T_c$ is known as what property?
What happens to a Type I superconductor when the applied magnetic field strength exceeds its critical magnetic field ($H_c$)?
What state do Type II superconductors enter when the magnetic field is between $H_{c1}$ and $H_{c2}$?
Why is the space environment technically referred to as weightlessness instead of true zero gravity?
What is the most frequently described initial feeling astronauts experience upon reaching orbit?
How quickly does the brain adapt to suppress the initial falling sensation?
What physical system's recalibration leads to space adaptation syndrome?
What common symptom related to fluid shifts is often described as feeling like having a head cold?
What visible physical changes result from the cephalad fluid shift in microgravity?
What structural change in the spine leads to frequent back pain for long-duration travelers?
How much taller can crew members temporarily grow during a mission due to spinal disc expansion?
If an astronaut sustained a fracture, what specific pain element caused by gravity would be absent in weightlessness?