📐 Pythagoras — a² + b² = c²
Move sliders. Squares on legs add to the hypotenuse’s square.
a² + b² = c²
c = ?
Areas: a²=? · b²=? · c²=?
Check: a²+b² ≟ c²
⚛️ Isotopes — same Z, different N
Set protons Z (element) and add neutrons N. A = Z + N.
A = Z + N
Element: C — Carbon
Isotope: ¹²C
Counts: p=6, n=6, e=6
Isotope: ¹²C
Counts: p=6, n=6, e=6
🔆 Energy Levels — jump emits a photon
Choose shell count and electron shell. Watch the beam for downward transitions (toy model).
ΔE ≈ 1/n²
n = 2
✖️ Area = a×b
Resize the grid. Area rectangle shows the product visually.
a×b = area
Product: 63