"भौतिकी के सूत्र" (अनुभाग) सम्पादित करें

== तरंग ==
{| class="wikitable"
|-
|[[torsion constant]]
|<math>\kappa = -\tau / \theta</math>
|-
|[[phasor]]
|<math></math>
|-
|[[node]]
|<math></math>
|-
|[[antinode]]
|<math></math>
|-
|[[Frequency|period]]
|<math>T</math>
|-
|[[amplitude]]
|<math>x_m</math>
|-
|[[decibel]]
|<math>dB</math>
|-
|[[frequency]]
|<math>f = 1/T = \omega /(2\pi)</math>
|-
|[[angular frequency]]
|<math>\omega = 2\pi f = 2\pi / T</math>
|-
|[[phase angle]]
|<math>\phi</math>
|-
|[[phase (waves)|phase]]
|<math>(\omega t + \phi)</math>
|-
|[[damping]] force
|<math>f_d = -bv</math>
|-
|[[phase (waves)|phase]]
|<math>ky -\omega t</math>
|-
|[[wavenumber]]
|<math>k</math>
|-
|[[phase constant]]
|<math>\phi</math>
|-
|[[linear density]]
|<math>\mu</math>
|-
|[[harmonic number]]
|<math>n</math>
|-
|[[harmonic series (mathematics)|harmonic series]]
|<math>f = v/\lambda = nv/(2L) </math>
|-
|[[wavelength]]
|<math>\lambda = k/(2\pi)</math>
|-
|[[bulk modulus]]
|<math>B = \Delta p /(\Delta V / V)</math>
|-
|[[path length difference]]
|<math>\Delta L</math>
|-
|[[resonance]]
|<math>\omega_d = \omega</math>
|-
|[[phase difference]]
|<math>\phi = 2 \pi \Delta L / \lambda </math>
|-
|fully [[constructive interference]]
|<math>\Delta L/\lambda = n</math>
|-
|fully [[destructive interference]]
|<math>\Delta L/\lambda = n+0.5</math>
|-
|[[sound intensity]]
|<math>I = P/A = \rho v \omega^2 s^2_m/2</math>
|-
|[[sound power]] source
|<math>P_s</math>
|-
|[[sound intensity]] over distance
|<math>I = P_s/(4\pi r^2)</math>
|-
|[[sound intensity]] standard reference
|<math>I_0</math>
|-
|[[sound level]]
|<math>\Beta = (10 dB)log(I/I_0)</math>
|-
|pipe, two open ends
|<math>f=v/\lambda = nv/(2L)</math>
|-
|pipe, one open end
|<math>f = v/\lambda = nv/(4L)</math> for n odd
|-
|[[beat (acoustics)|beats]]
|<math>s(t) = [2s_m\cos\omega ' t ] \cos \omega t</math>
|-
|[[beat (acoustics)|beat frequency]]
|<math>f_{beat} = f_1 - f_2</math>
|-
|[[Doppler effect]]
|<math>f' = f(v+-v_D)/(v+-v_S)</math>
|-
|[[sonic boom]] angle
|<math>\sin \theta = v/v_s</math>
|-
|average [[wave power]]
|<math>P_{avg}=\mu v \omega^2 x_m^2/2</math>
|-
|[[pressure amplitude]]
|<math>\Delta p_m = (v\rho \omega)x_m</math>
|-
|[[wave equation]]
|<math>\frac{\partial y}{\partial x^2} = \frac{1}{v^2} \frac{\partial ^2 y}{\partial t^2}</math>
|-
|[[wave superposition]]
|<math>x'(y,t) = x_1(y,t) + x_2(y,t)</math>
|-
|[[wave speed]]
|<math>v = \omega/k = \lambda/T = \lambda f</math>
|-
|[[speed of sound]]
|<math>v = \sqrt{B/ \rho }</math>
|-
|[[wave speed]] on a [[stretched string]]
|<math>v=\sqrt{f_t/\mu}</math>
|-
|[[angular frequency]] of an angular simple [[harmonic oscillator]]
|<math>\omega = \sqrt{I/\kappa}</math>
|-
|[[angular frequency]] of a low amplitude [[simple pendulum]]
|<math>\omega = \sqrt{L/g}</math>
|-
|[[angular frequency]] of a low amplitude [[physical pendulum]]
|<math>\omega = \sqrt{I/mgh}</math>
|-
|[[angular frequency]] of a linear simple [[harmonic oscillator]]
|<math>\omega = \sqrt{k/m} </math>
|-
|[[angular frequency]] of a linear [[damped]] [[harmonic oscillator]]
|<math>\omega ' = \sqrt{(k/m)-(b^2/4m^2)}</math>
|-
|wave displacement
|<math>x(t)=x_m\cos(\omega t + \phi)</math>
|-
|wave displacement when [[damped]]
|<math>x(t)=x_m\cos(\omega 't+\phi)(e^{-bt/2m})</math>
|-
|wave velocity
|<math>v(t)=x_m\sin(\omega t + \phi)(- \omega)</math>
|-
|wave acceleration
|<math>a(t)=x_m\cos(\omega t + \phi)(- \omega^2 )</math>
|-
|[[transverse wave]]
|<math>x(y,t) = x_m\sin(ky-\omega t)</math>
|-
|wave traveling backwards
|<math>x(y,t) = x_m\sin(ky+\omega t)</math>
|-
|[[resultant wave]]
|<math>x'(y,t) = x_m\sin(ky-\omega t + \phi/2)(2\cos\phi/2)</math>
|-
|[[standing wave]]
|<math>x'(y,t) = \cos(\omega t)(2y\sin ky)</math>
|-
|[[sound displacement function]]
|<math>x(y,t) = x_m\cos(ky-\omega t)</math>
|-
|[[sound pressure-variation function]]
|<math>\Delta p(y,t) = \sin(ky-\omega t)\Delta p_m</math>
|-
|potential [[harmonic energy]]
|<math>E_U(t) = kx^2/2 = kx_m^2\cos^2(\omega t + \phi)/2</math>
|-
|kinetic [[harmonic energy]]
|<math>E_K(t) = kx^2/2 = kx_m^2\sin^2(\omega t + \phi)/2</math>
|-
|total [[harmonic energy]]
|<math>E(t) = kx_m^2/2 = E_U + E_K</math>
|-
|damped [[mechanical energy]]
|<math>E_{mec}(t) = ke^{-bt/m}x^2_m/2</math>
|-
|}