Reality, within reach.
A little curiosity. An entire universe. 32 investigations across eight disciplines.
The speed that makes an orbit
At the same starting radius, how does speed change an orbit?
Falling without landing
How can a satellite keep falling without reaching the ground?
The inverse-square laboratory
How much weaker is gravity at twice the centre distance?
The energy to escape
What separates a bound orbit from an escape trajectory?
Which way does force point?
How does charge sign affect field and force direction?
Two sources, one field
Does the field cancel between equal opposite charges?
From voltage to motion
Is a field line a particle trajectory?
The magnetic bend
Does a magnetic field increase particle speed?
How fast does a wave travel?
At fixed speed, what happens to wavelength as frequency rises?
When two waves meet
Can two nonzero waves add to zero?
Waves that appear to stand still
Why do some points never move in a standing wave?
The frequencies inside a signal
How can simple waves build a complex signal?
The rhythm of a pendulum
What sets a pendulum’s period?
Energy in an elastic world
Where does an oscillator store its energy?
The geometry of a launch
Why does a projectile trace a parabola?
The spinning conservation law
Why does pulling mass inward increase angular speed?
A mirror’s exact promise
How does tilting a mirror steer a beam?
At the boundary of two worlds
When does light bend, and when can it not escape?
Where an image comes together
How can a lens make both real and virtual images?
The edge of sharpness
Why does a narrow slit make a wide pattern?
Pressure from a thousand impacts
How do invisible molecular impacts become pressure?
A temperature is a distribution
What does thermal speed actually mean?
The restless path of a tracer
Can random motion have a predictable law?
Order dissolves into probability
Why does a concentrated cloud spread?
A boundary makes a quantum
Why are only certain energies allowed?
Through a forbidden barrier
How can transmission occur below the barrier energy?
The price of localisation
What does a narrow wave packet cost in momentum?
An electron has no little orbit
What does an atomic orbital represent?
Think in ratios
Can a dimensionless number reveal an entire family of orbits?
Audit an energy budget
How can a conserved quantity test a model?
Know where a formula stops
Is an elegant approximation always accurate?
A spectrum is a measurement
What does a finite observation hide?