Physics Calculators (Page 19)
Velocity, mechanics, energy, electricity and physics tools.
LC Resonance Calculator
Compute LC resonant frequency and characteristic impedance in multiple units.
Maxwell Speed Distribution Calculator
Enter temperature and molar mass to compute the most probable, mean and RMS molecular speeds of an ideal gas.
Eddy Current Loss Calculator
Enter lamination thickness, frequency, flux density, stack volume and core constant to compute eddy-current (iron) loss P_e = K_e·f²·B²·t²·V (W).
Thermal Resistance Calculator
Enter thickness, conductivity, area and temp difference to compute thermal resistance R=Δx/(kA), heat-flow rate Q=ΔT/R and conductance G=1/R. Copper k=401, A=1 cm², Δx=1 m → R≈24.94 K/W.
Stokes-Einstein Relation Calculator
Enter temperature, viscosity and particle radius to compute the diffusion coefficient D=kT/(6πηr) and the drag coefficient γ=6πηr. Water at 300 K, r=1 μm → D≈2.19e-13 m²/s.
Johnson-Nyquist Noise Calculator
Enter resistance, temperature and bandwidth to compute the thermal (Johnson) noise voltage, current and power.
Shot Noise Calculator
Enter DC current and bandwidth to compute shot-noise current i_n=√(2e·I·B). I=1 mA, B=1 MHz, e=1.602e-19 → i_n≈17.9 nA (RMS). It is the Poisson granularity of charge.
Seebeck Coefficient Calculator
Enter Seebeck coefficient and temperature difference to compute thermoelectric voltage V=S·ΔT. T-type 41 μV/K, ΔT=100 K → V=4.1 mV; K-type at 1000 K → 41 mV.
Equipartition Theorem Calculator
Enter degrees of freedom and temperature to compute the average energy per particle ⟨E⟩ = (f/2)·k·T and molar heat capacity.
Brownian Motion Calculator
Compute mean square displacement and RMS displacement of a Brownian particle.
Fick's First Law Calculator
Enter diffusion coefficient and concentration gradient to compute the diffusion flux J = −D·(dc/dx).
Wiedemann-Franz Law Calculator
Enter the electrical conductivity and temperature to compute the metal thermal conductivity κ=L·σ·T. Copper σ=5.96e7, T=300K → κ≈436 W/(m·K).