806 templates · page 8 of 9
Chemistry & Physics diagram templates
Energy diagrams, circuits, free-body, optics, reaction networks.
Chemistry — Polymerisation
Addition versus condensation polymerisation.
Graphviz (DOT)Chemistry — Saponification (Soap Making)
Hydrolysing fats with alkali to make soap.
Graphviz (DOT)Physics — Free-body: box on the verge of tipping
The normal force shifts to the leading edge as a box tips.
Free-body diagramPhysics — Free-body: cylinder rolling down a slope
Friction provides the torque for rolling without slipping.
Free-body diagramPhysics — Free-body: mass between two springs
Two opposing spring forces on a central mass.
Free-body diagramPhysics — Free-body: block on a frictionless wedge
Only weight and the perpendicular normal force act.
Free-body diagramPhysics — Circuit: emitter follower
A common-collector stage with unity voltage gain.
Circuit schematicPhysics — Circuit: differential pair
A long-tailed pair amplifies the difference of two inputs.
Circuit schematicPhysics — Circuit: cascode amplifier
Stacked transistors for high bandwidth and gain.
Circuit schematicPhysics — Circuit: common-base amplifier
Input at the emitter, output at the collector.
Circuit schematicPhysics — Logic: master-slave flip-flop
Two latches in series give edge-triggered behaviour.
Digital logic (gates / K-map / truth table)Physics — Logic: 4-bit shift register
Data ripples through four stages on each clock.
Digital logic (gates / K-map / truth table)Physics — Logic: mod-3 counter
A counter that resets after three clock pulses.
Digital logic (gates / K-map / truth table)Chemistry — Ionising vs Non-Ionising Radiation
Comparing the two kinds of radiation.
Venn / EulerChemistry — Petri Net: Esterification
A reversible condensation reaching equilibrium.
Petri NetsChemistry — Petri Net: Precipitation
A double-displacement reaction forming a precipitate.
Petri NetsChemistry — Atoms vs Ions
Neutral atoms versus charged ions.
Venn / EulerChemistry — Atoms vs Molecules
Single atoms versus bonded groups of atoms.
Venn / EulerPhysics — Free-body: load on an angled cable
A weight held by an angled cable and a horizontal stay.
Free-body diagramPhysics — Free-body: block on an accelerating cart
Friction accelerates the block with the cart.
Free-body diagramPhysics — Free-body: pendulum held to one side
A held pendulum bob in equilibrium at an angle.
Free-body diagramPhysics — Free-body: mass on a spring on an incline
A spring balances the gravity component on a slope.
Free-body diagramPhysics — Circuit: RC band-pass filter
A high-pass and low-pass stage in series.
Circuit schematicPhysics — Circuit: twin-T notch filter
A twin-T network rejects one frequency.
Circuit schematicPhysics — Circuit: Pierce crystal oscillator
A quartz crystal sets a precise frequency.
Circuit schematicPhysics — Circuit: Dickson charge pump
Diodes and capacitors multiply a voltage.
Circuit schematicPhysics — Logic: Johnson counter
A twisted-ring counter feeding back the inverted output.
Digital logic (gates / K-map / truth table)Physics — Logic: ring counter
A single token circulating around the stages.
Digital logic (gates / K-map / truth table)Physics — Logic: up/down counter control
Direction logic selecting count-up or count-down.
Digital logic (gates / K-map / truth table)Chemistry — Petri Net: Haber Process
N2 + 3 H2 <-> 2 NH3 with stoichiometric arcs.
Petri NetsChemistry — Petri Net: Displacement Redox
Zn + Cu2+ -> Zn2+ + Cu as token flow.
Petri NetsChemistry — Conduction vs Convection
Two ways heat moves through matter.
Venn / EulerChemistry — Evaporation vs Boiling
Two ways a liquid becomes a gas.
Venn / EulerPhysics — LED with Series Resistor
A current-limiting resistor protects the LED.
Circuit schematicPhysics — RL Series Circuit
A resistor and inductor driven by a source.
Circuit schematicPhysics — Car on a Banked Curve
Weight, normal force and the centripetal resultant.
Free-body diagramPhysics — RC Charging Circuit
A capacitor charges through a resistor when the switch closes.
Circuit schematicPhysics — Atwood Machine
Two masses over a pulley; tension and weight on each.
Free-body diagramChemistry — Elements vs Compounds
Two kinds of pure substance.
Venn / EulerPhysics — LC Tank Circuit
A parallel inductor and capacitor resonate.
Circuit schematicPhysics — Block on Incline with Pulley
An incline block linked over a pulley to a hanging mass.
Free-body diagramChemistry — Mixtures vs Compounds
How mixtures differ from compounds.
Venn / EulerPhysics — Potential Divider
Two series resistors set the output voltage.
Circuit schematicPhysics — Pushing a Crate
Applied push, weight, normal force and friction.
Free-body diagramChemistry — Reaction Energy Pathway
Reactants, transition state and products.
Graphviz (DOT)Chemistry — Titration Curve
A strong acid titrated with a strong base.
PlotlyPhysics — Half-Wave Rectifier
A diode passes only the positive half-cycles.
Circuit schematicPhysics — Hanging Sign (Two Cables)
Equilibrium of a sign held by two angled cables.
Free-body diagramChemistry — The Nitrogen Cycle
Fixation, nitrification and denitrification.
Graphviz (DOT)Chemistry — Metals vs Non-metals
Properties contrasted, with metalloids in the middle.
Venn / EulerPhysics — Two Lamps in Parallel
Each lamp gets the full supply voltage.
Circuit schematicPhysics — Car Braking
Friction and drag oppose the car's motion.
Free-body diagramPhysics — Three Resistors in Series
Series resistances add to give the total.
Circuit schematicPhysics — Simple Pendulum Bob
String tension and weight on a displaced bob.
Free-body diagramChemistry — Ionic vs Covalent Bonding
Two ways atoms achieve full outer shells.
Venn / EulerPhysics — Two Lamps in Series
Lamps share the supply voltage between them.
Circuit schematicPhysics — Crane Jib Forces
Tie tension, jib compression and the load weight.
Free-body diagramPhysics — RC Discharge Circuit
A charged capacitor discharges through a resistor.
Circuit schematicPhysics — Person in an Accelerating Lift
Apparent weight when the lift accelerates upward.
Free-body diagramChemistry — Extraction of Iron (Blast Furnace)
Reduction of iron ore and slag formation.
Graphviz (DOT)Physics — Two Cells in Series
Cell EMFs add to drive a lamp.
Circuit schematicChemistry — Electrolysis
Redox at the cathode and anode.
Graphviz (DOT)Physics — Aircraft in Level Flight
Lift, weight, thrust and drag in balance.
Free-body diagramPhysics — LDR Light Sensor
A potential divider with a light-dependent resistor.
Circuit schematicChemistry — Catalytic Cracking
Breaking long alkanes into useful products.
Graphviz (DOT)Physics — Diode Clipper
A diode limits the output voltage swing.
Circuit schematicPhysics — Skydiver at Terminal Velocity
Air resistance balances weight at terminal velocity.
Free-body diagramChemistry — Saturated vs Unsaturated
Alkanes versus alkenes.
Venn / EulerPhysics — Capacitors in Parallel
Parallel capacitances add.
Circuit schematicPhysics — Traffic-Light LEDs
Three LEDs in parallel across a supply.
Circuit schematicChemistry — Addition vs Condensation Polymers
Two routes to making polymers.
Venn / EulerPhysics — Inductors in Series
Series inductances add.
Circuit schematicChemistry — Acids vs Alkalis
Opposite ends of the pH scale.
Venn / EulerPhysics — Potentiometer
A wiper taps a variable fraction of the voltage.
Circuit schematicChemistry — Giant vs Simple Structures
Two kinds of covalent structure.
Venn / EulerPhysics — NTC Thermistor Sensor
Resistance falls as temperature rises.
Circuit schematicPhysics — Beam on Two Supports
Two upward reactions balance the load.
Free-body diagramChemistry — Filtration vs Distillation
Two ways to separate mixtures.
Venn / EulerPhysics — Fuse Protecting a Lamp
A fuse breaks the circuit if the current is too high.
Circuit schematicPhysics — Ladder Against a Wall
Weight, ground reactions and the wall's normal force.
Free-body diagramPhysics — Boat Towed at Constant Speed
Tow, drag, upthrust and weight in balance.
Free-body diagramChemistry — Fermentation
Anaerobic pathways from glucose.
Graphviz (DOT)Chemistry — Covalent vs Metallic Bonding
Two ways atoms share or pool electrons.
Venn / EulerPhysics — RC Coupling (AC Coupling)
A series capacitor blocks DC and passes AC.
Circuit schematicPhysics — Forces on an Aerofoil
Lift, weight, thrust and drag on a wing.
Free-body diagramChemistry — Strong vs Weak Bases
Degree of dissociation distinguishes them.
Venn / EulerPhysics — Resistor and Inductor in Parallel
An R and L sharing the same two nodes.
Circuit schematicPhysics — Box on a Conveyor Belt
Friction drives the box along with the belt.
Free-body diagramMcCabe–Thiele stage construction — benzene/toluene column at 1 atm
McCabe–Thiele x-y diagram stepping off theoretical stages for a benzene/toluene distillation with relative volatility 2.45, saturated-liquid feed z_F = 0.45, x_D = 0.95, x_B = 0.05 and reflux ratio R = 1.5 R_min, used by process engineers to fix stage count, reflux and feed-tray location.
PlotlyT–x–y vapour–liquid equilibrium — ethanol/water at 101.3 kPa with azeotrope
Binary temperature–composition VLE diagram for ethanol and water at atmospheric pressure showing the bubble-point and dew-point curves and the minimum-boiling azeotrope at 0.894 mole fraction ethanol and 78.15 °C, the phase-behaviour figure a separations engineer needs before specifying a distillation or dehydration scheme.
Vega-LiteStoessel criticality diagram — cooling-failure assessment of a semi-batch acylation
Thermal process-safety criticality diagram placing process temperature, MTSR, MTT and T_D24 on one temperature scale to classify a semi-batch reaction as Stoessel class 4, the assessment a reaction-hazard or process-safety chemist files from calorimetry data before scaling a batch reaction up.
Vega-LiteEnzyme kinetics — competing inhibition models
Compare initial rates across substrate and inhibitor concentrations. Fit competing models to untransformed rates and inspect residuals; a reciprocal plot alone should not determine the inhibition mechanism.
ScienceDynamic equilibrium — rates and perturbations
Distinguish equilibrium composition from equal forward and reverse rates. A concentration or temperature perturbation changes the approach to equilibrium; a catalyst changes rates without changing the equilibrium constant at fixed temperature.
ScienceAnalytical method — calibration, recovery and matrix
Plan an assay validation around the intended concentration range. Calibration, matrix effects, precision and recovery answer different questions; acceptance criteria must be chosen for the measurement purpose.
ScienceChromatography — retention, selectivity and efficiency
Diagnose a separation by examining retention, selectivity and peak width separately. Use a suitability mixture and replicate injections; changing one operating factor can trade resolution against analysis time.
ScienceElectrochemical cell — transport and interfaces
Separate electron transport in the external circuit from ion transport through the electrolyte. Interface kinetics and mass transport both affect measured current; the reference electrode measures potential while ideally drawing negligible current.
SciencePolymer structure — synthesis to performance
Link polymer synthesis choices to molecular architecture, morphology and measured performance. Molecular mass, dispersity and crystallinity are distinct attributes; processing history can change properties without changing monomer identity.
ScienceCatalyst lifetime — distinguish deactivation routes
Build a catalyst-lifetime study with activity over time and complementary characterisation. Fouling, poisoning and sintering are competing explanations, not conclusions drawn from loss of conversion alone.
ScienceSpectral identification — orthogonal constraints
Combine elemental composition, functional-group evidence and connectivity constraints. A candidate structure must satisfy all observations; a database match is supporting evidence rather than proof on its own.
ScienceAdsorption isotherm — mass balance and model choice
Analyse equilibrium adsorption using measured initial and equilibrium concentrations plus sorbent mass. Compare model assumptions and residuals; a good fit alone does not prove a microscopic adsorption mechanism.
Science