Solved cryptogram
A superconductor carries current with no resistance, so a loop of it can circulate for years.
Physics Facts, sourced to HyperPhysics, Georgia State University.
Solve it yourself
This fact is a cryptogram here: 76 letters over 17 different ones, graded medium.
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What it means
Not very small resistance. Zero, as far as any experiment has been able to establish, below a temperature that depends on the material. A current started in a closed superconducting ring has been watched for years without measurable decay. That is what makes the magnets in an MRI scanner and in a particle accelerator possible: once the field is established the power supply can be disconnected, and the current keeps going around.
The claim comes from HyperPhysics, Georgia State University.
- SourceHyperPhysics, Georgia State University
- CollectionPhysics Facts
- Difficultymedium
- Length76 letters, 17 of them different
Nearby in the collection
The facts either side of this one.
- HyperPhysics, Georgia State Universitymedium, 72 letters
- Brookhaven National Laboratoryhard, 71 letters
- U.S. Department of Energyeasy, 73 letters
- Gravity Probe B, Stanford Universitymedium, 68 letters
About as hard as this one
Scored closest to it by the model behind our guide to solving cryptograms.
- NISTmedium, 74 letters
- HyperPhysics, Georgia State Universitymedium, 72 letters
- NASA Scientific Visualization Studiomedium, 68 letters
- NASA Glenn Research Centermedium, 69 letters