In physics, you can’t get something for nothing, but superconductors offer the hope of someday breaking even. Getting them to live up to their potential has given scientists more than a few headaches in the years since they were discovered. Let’s see how much you know about these wonders of electromagnetism.
What happens to current sent through a superconducting wire?
It gains a slight voltage boost.
It's transmitted without loss of energy.
It experiences a sharp voltage drop.
Who discovered superconductivity?
Johannes Diderik van der Waals
Hugo Christiaan Hamaker
Heike Kamerlingh Onnes
In what year did Onnes discover it?
Approximately how cold do conventional superconductors have to get before they enter the superconducting state?
0 K (minus 273.2 C, minus 459.7 F)
39 K (minus 234 C, minus 390 F)
130 K (minus 143 C, minus 226 F)
Superconductors cease being superconductors if they are exposed to which of the following?
too large of a magnetic field
too much current
Both are correct.
Which of the following do NOT currently use superconductors?
How well a material conducts electricity has to do with what factor?
how easily its component atoms give up electrons
the availability of free electrons to carry current
both A and B
You can describe the structure of a typical conductor as which of the following?
a lattice of atoms
a series of tubes
a bevy of bosons
What of the following is NOT a source of resistance in a typical conductor?
What happens to a superconductor when it is cooled to its critical temperature?
It abruptly loses all resistance.
It undergoes a phase transition.
Both are correct
What are Cooper pairs?
elements on the periodic tale that share the same conductance
pairings of metals that make good superconducting alloys
linked electrons that help explain superconductivity
What is the name of the theory that explains how conventional superconductors work?
the XTC theory
the BCS theory
the Aquitaine Progression
Today, superconductors that fit the BCS model are called "classical." What's the designation for superconductors that do NOT jibe with this theory?
Which of the following elements become superconductors at low temperatures and pressures?
selenium, silicon and uranium
aluminum, lead, mercury and tin
chromium, cobalt, iron, manganese and nickel
Most superconductors are what type of material?
alloys or compounds
Which type of superconductor exhibits perfect diamagnetism in every superconducting state?
both of the above
What is the vortex state?
a feedback loop in which a superconducting current collapses the superconducting state
a mixed state in which superconducting current whirls around islands of normalcy
What year ushered in the age of high-temperature superconductors?
Which of the following has NOT been used as a coolant for superconductors?
In 2000, Andre Geim and Sir Michael Berry won the Ig Nobel Prize for physics for doing what?