What happens to the correlation length at the transition?

• It grows without bound
• It shrinks to nothing
• It freezes exactly

What does one critical exponent measure?

• The color of the sample
• The size of the laboratory
• How one quantity follows a power law near the point

Universality means different materials can share the same exponents.

Circle one:   True   False

Why does microscopic detail stop mattering?

• Atoms leave the sample
• Measurements stop working
• The correlation length swallows it

A fluid critical point and a magnet share exponents. What do they share?

• Identical atoms
• Dimension and symmetry
• The same laboratory

What survives repeated renormalisation steps?

• Only what the exponents can depend on
• Every tiny wiggle
• Nothing whatsoever

A lab reports matching exponents and claims identical atoms. What is overclaimed?

• Exponents reveal atomic serial numbers
• Universality is a myth
• Matching numbers show shared broad traits, not identical atoms

Two magnets in different dimensions: same exponents or not?

• Always identical, dimension never matters
• Not necessarily; dimension helps decide the shared numbers
• Exponents do not exist for magnets