The figure library — page 4

• The pressure that comes from counting
• What it costs to take the salt out
• The membrane that almost holds
• The swelling a membrane cannot stop
• The counterions that never leave the chain
• The like charges that pull together

Every branch osmotic-cell draws, and what checks it

• The angle that throws furthest, and why nobody notices
• The angle that drag moves
• Everywhere a throw can reach
• One curve answers every slope
• The best throw is a tangency
• The throw most likely to go in

Every branch projectile-angles draws, and what checks it

• Light has a pressure
• The size the light cannot blow away
• The brightness a mass cannot exceed
• The light that pulls rather than pushes
• The friction made of light
• The limit that belonged to a simpler atom

Every branch radiation-pressure draws, and what checks it

• Why the sky is blue and the sunset is not, from one exponent
• When the particle is the size of the wave
• Why a litre of water is not blue for the reason the sky is
• Everything a scatterer removes, from one direction
• The cloud light has to walk through
• The walk that interference can stop

Every branch scattering-spectrum draws, and what checks it

• The surface that only lets things in
• Two clocks that disagree about the fall
• The orbit that cannot be made smaller
• The horizon that nothing marks
• The orbit that has to shrink
• The circle light cannot leave

Every branch schwarzschild draws, and what checks it

• The layer a parcel cannot leave
• The wave that picks an angle
• The wave that is required to stand still
• The reflection that changes the wavelength
• The latitude past which a tide cannot split
• The wave that holds a ship back

Every branch stratified-parcel draws, and what checks it

• Field lines are a choice, not a discovery
• The field before the lines were drawn on it
• One number for every point, and nothing at all is lost
• The attraction that needs no charge
• Nothing can be held still by a static field
• The potential is where the wanderers stop

Every branch vector-field draws, and what checks it

• Magnetism is electricity seen sideways
• The field nobody can transform away
• The disc that cannot be spun
• The one quantity a boost leaves alone
• Charge and current are one thing
• Six numbers, one object

Every branch wire-frames draws, and what checks it

• The bend at the boundary, and what it is really about
• The angle past which light cannot leave
• The reflection that happens where the glass is not
• The channel with no walls
• The angle that is two angles

Every branch critical-angle draws, and what checks it

• The note that changes on approach, and the two ways of getting it
• The shift that survives at right angles
• The sky that crowds into a cone
• The cone the source leaves behind
• The shift a mirror gives twice

Every branch doppler-wavefronts draws, and what checks it

• The staircase that never reaches the floor
• Hotter than any temperature there is
• The entropy that depends on how fast it was cooled
• A law about spectra, not about heat
• The count that decides which entropy is right

Every branch entropy-staircase draws, and what checks it

• The field that makes the other, and only while it is changing
• The magnet that falls slowly
• The rule that is two laws wearing one coat
• The coupling that is the same both ways
• The circuit that fights its own change

Every branch induction-loop draws, and what checks it

• The error that doubles on a schedule
• The last curve to go
• The fold that has to be there
• The map a dripping tap turns out to be
• The calm that is the ghost of a cycle

Every branch kam-tori draws, and what checks it

• A charge that turns must glow
• The sky that crowds into a cone
• The force a charge exerts on itself
• Whether a charge on a table glows
• The bill that arrives when the pushing stops

Every branch larmor-radiation draws, and what checks it

• The two pendulums that will not stop swapping
• The mass that makes another stand still
• The frequency a lattice cannot carry
• The energy that refuses to be shared
• The condition three modes never meet

Every branch normal-modes draws, and what checks it

• The pendulum, and the small lie that makes it simple
• The period that depends on the swing, computed exactly
• The length nobody has to measure
• The fall that does not depend on what is falling
• The binding energy that has to fall too

Every branch pendulum-period draws, and what checks it