Diagram library

13 free textbook-style diagrams — physics, chemistry, biology and electrical figures. Each is clean, editable SVG: open in the editor, recolor, relabel, or combine with the Diagram DSL to generate variants. Download any figure directly.

Physics

Block W = mg N F f Free Body Diagram Block on horizontal surface Weight (W) Normal (N) Applied (F) Friction (f)
Free Body Diagram
Block on surface with weight, normal, applied force and friction
#forces #newton #mechanics #friction
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Inclined Plane — Forces θ m W N f W sinθ W cosθ N = mg cosθ | Friction f = μN | a = g(sinθ − μcosθ)
Inclined Plane
Block on slope with resolved force components
#forces #mechanics #components #slope
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Projectile Motion v₀ v₀cosθ v₀sinθ θ H (max height) R (range) g↓
Projectile Motion
Parabolic trajectory with velocity components and range
#kinematics #trajectory #velocity #gravity
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Transverse Wave A A λ (wavelength) T (period) Crest Trough Direction v = fλ | f = 1/T | y = A sin(kx − ωt)
Transverse Wave
Wave with amplitude, wavelength, crest and trough labelled
#waves #amplitude #wavelength #oscillation
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Optics

Converging Lens (Ray Diagram) Object F F' Image Blue: parallel ray | Green: central ray | Red: focal ray
Converging Lens Ray Diagram
Biconvex lens with three principal rays and image formation
#lens #ray diagram #focal point #image
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Concave Mirror (Ray Diagram) C F P Object Image Real, inverted, diminished image between F and C
Concave Mirror Ray Diagram
Concave mirror with object, image and three principal rays
#mirror #ray diagram #focal point #reflection
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Refraction of Light (Snell's Law) Medium 1 (n₁ = 1.0, air) Medium 2 (n₂ = 1.5, glass) Normal Incident ray Reflected Refracted ray θ₁ θ₂ n₁ sinθ₁ = n₂ sinθ₂
Refraction (Snell's Law)
Light bending at interface between two media with Snell's law
#refraction #snell #light #interface
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Electrical

Series Circuit + − EMF R₁ R₂ Switch A Current I flows clockwise → V = I(R₁ + R₂)
Series Circuit
Battery, two resistors and ammeter in series
#circuit #series #resistor #ohm
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Parallel Circuit + − R₁ R₂ R₃ I₁ I₂ I₃ 1/R = 1/R₁ + 1/R₂ + 1/R₃ | I = I₁ + I₂ + I₃
Parallel Circuit
Three resistors in parallel branches with current labels
#circuit #parallel #resistor #current
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Ohm's Law — V = IR + − V R A I V V = I × R V = volts I = amps R = ohms (Ω) P = IV = I²R = V²/R
Ohm's Law Circuit
Simple circuit illustrating V = IR with voltmeter and ammeter
#ohm #voltage #current #resistance
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Chemistry

Simple Distillation Setup Mixture Thermometer Water in Water out Distillate Heat → vaporise → condense → collect distillate
Simple Distillation
Round-bottom flask, Liebig condenser and receiver flask setup
#distillation #apparatus #condenser #separation
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Acid-Base Titration 0 5 10 NaOH (titrant) HCl + indicator Burette Conical flask (analyte) Endpoint: Colour change C₁V₁ = C₂V₂ at equivalence point
Acid-Base Titration
Burette, conical flask and indicator for titration setup
#titration #acid #base #burette #indicator
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Bohr Atomic Model (Carbon) 6p 6n e⁻ e⁻ n=1 (2e⁻) e⁻ e⁻ e⁻ e⁻ n=2 (4e⁻) C n=1 electrons n=2 electrons Nucleus Carbon: 6 protons, 6 neutrons, 6 electrons
Bohr Atomic Model
Carbon atom with electron shells and nucleus labelled
#atom #bohr #electron #nucleus #shell
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