Term: echelon: a diffraction grating consisting of a pile of plates of equal thickness arranged stepwise with a constant offset
Broader: diffraction grating: optical device consisting of a surface with many parallel grooves in it; disperses a beam of light (or other electromagnetic radiation) into its wavelengths to produce its spectrum | Unrelated: biplane: old fashioned airplane; has two wings one above the other
Broader: diffraction grating: optical device consisting of a surface with many parallel grooves in it; disperses a beam of light (or other electromagnetic radiation) into its wavelengths to produce its spectrum | Unrelated: royal road: an auspicious way or means to achieve something
Broader: diffraction grating: optical device consisting of a surface with many parallel grooves in it; disperses a beam of light (or other electromagnetic radiation) into its wavelengths to produce its spectrum | Unrelated: nihilism: complete denial of all established authority and institutions
Broader: diffraction grating: optical device consisting of a surface with many parallel grooves in it; disperses a beam of light (or other electromagnetic radiation) into its wavelengths to produce its spectrum | Unrelated: beryllium bronze: a copper-base alloy containing beryllium
Broader: diffraction grating: optical device consisting of a surface with many parallel grooves in it; disperses a beam of light (or other electromagnetic radiation) into its wavelengths to produce its spectrum | Unrelated: radio source: an object that radiates radio waves
Broader: diffraction grating: optical device consisting of a surface with many parallel grooves in it; disperses a beam of light (or other electromagnetic radiation) into its wavelengths to produce its spectrum | Unrelated: fistfight: a fight with bare fists
Broader: diffraction grating: optical device consisting of a surface with many parallel grooves in it; disperses a beam of light (or other electromagnetic radiation) into its wavelengths to produce its spectrum | Unrelated: lath and plaster: a building material consisting of thin strips of wood that provide a foundation for a coat of plaster
Broader: diffraction grating: optical device consisting of a surface with many parallel grooves in it; disperses a beam of light (or other electromagnetic radiation) into its wavelengths to produce its spectrum | Unrelated: vulgarization: the act of rendering something coarse and unrefined
Broader: diffraction grating: optical device consisting of a surface with many parallel grooves in it; disperses a beam of light (or other electromagnetic radiation) into its wavelengths to produce its spectrum | Unrelated: jitters: extreme nervousness
Broader: diffraction grating: optical device consisting of a surface with many parallel grooves in it; disperses a beam of light (or other electromagnetic radiation) into its wavelengths to produce its spectrum | Unrelated: domino: a loose hooded cloak worn with a half mask as part of a masquerade costume