তরঙ্গ - সূত্রাবলী

$$y = A\sin(\omega t - kx)$$

k = 2π/λ, ω = 2πf

$$v = f\lambda = \frac{\omega}{k}$$

$$v = \sqrt{\frac{T}{\mu}}$$

T = টান, μ = রৈখিক ভর

$$f_n = \frac{n}{2L}\sqrt{\frac{T}{\mu}}$$

$$v = \sqrt{\frac{\gamma P}{\rho}} = \sqrt{\frac{\gamma RT}{M}}$$

$$f' = f\frac{v \pm v_o}{v \mp v_s}$$

কাছে আসলে +vo, −vs

$$f_{beat} = |f_1 - f_2|$$

$$I \propto A^2,\quad I = \frac{P}{4\pi r^2}$$

তরঙ্গ — সূত্রাবলী