- virtual displacement
- virtual image
- virtual object
- virtual work
- visco[si]meter
- viscosity
- viscous fluid
- viscous force
- visibility
- visible light
- vision function
- volt-ampere characteristics
- voltage
- voltage divider
- voltaic cell
- voltmeter
- voltmeter-ammeter method
- volume
- volume charge density
- volume hologram
- vortex
- vortex line
- watthour meter
- wattmeter
- wave
- wave equation
- wave front
- wave function
- wave mechanics
- wave mode
- wave number
- wave optics
- wave packet
- wave surface
- wave vector
- wave-particle dualism
- waveguide
- wavelength
- wavelet
- wedge film
- weight
- weighted mean
- weightlessness
- Wheatstone bridge
- white light
- width of energy level
- Wiedemann-Franz law
- Wien displacement law
- Wien formula
- Wilson cloud chamber