(physics) the fundamental law of electrostatics - the force between two point charges is proportional to the product of their charges, and inversely proportional to the square of the distance between them

(chemistry, physics) The total pressure of a mixture or gases is the sum of the partial pressures of each gas in the mixture; it is only true for ideal gases.

(optics) Snell's law

(optics) the law that, for a ray incident on the interface of two media, the sine of the angle of incidence times the index of the refraction of the first medium is equal to the sine of the angle of refraction times the index of refraction of the second medium

(physics) A law that equates the angle (𝜃) between the incident and scattered ray to the spacing (d) between the crystal planes and the wavelength (𝜆) of the radiation - n𝜆=2d sin (𝜃),

(physics) the principle that the stress applied to a solid is directly proportional to the strain produced. This law describes the behavior of springs and solids stressed within their elastic limit.

Alternative form of Hubble law

(astronomy) A law stating that the velocity at which a distant object is receding from the Earth (as measured by its redshift) is proportional to its distance; observational evidence for an expanding universe.

Of or pertaining to common law. / Relating to common-law marriage.

(law) Law developed by judges, courts, and agency adjudicatory tribunals, through their decisions and opinions (also called case law) (as opposed to statutes promulgated by legislatures, and regulations promulgated by the executive branch).