angstrom
Atomic distance unit
An angstrom is a unit of length equal to one ten-billionth of a meter, used primarily to measure atomic and molecular distances, wavelengths of light, and chemical bond lengths.
The symbol is Å.
At this scale, a hydrogen atom measures about one angstrom in diameter, and visible light has wavelengths between 4,000 and 7,000 angstroms.
Trillionth of a meter
- femtometer10⁻¹⁵ meters
- metricStandard of measurement
- lengthMeasure of extent
- scaleMeasure of relative size
dimension · size · microscopic · minuscule · infinitesimal · precision · resolution · diameter
Spatial repetition interval
- spectrumContinuous range of values
- emissionDischarged substance or act
- absorptionProcess of taking in
- spectral linesDiscrete wavelength emission patterns
spectrometer · diffraction · crystallography · Bragg · optical · ultraviolet · visible light · photon
Element's smallest unit
- electronNegative subatomic particle
- nucleusCentral controlling part
- bondBinding tie or connection
- orbitalRevolving around another
molecule · crystal · lattice · element · hydrogen · carbon · oxygen · valence
Of a Nordic kingdom
- physicistScientist of matter and energy
- astronomerCelestial bodies researcher
- UppsalaMajor Swedish cathedral city
- nineteenth centuryYears 1801-1900
picometer
Trillionth of a meter
- femtometer10⁻¹⁵ meters
- metricStandard of measurement
- lengthMeasure of extent
scale · dimension · size · microscopic · minuscule · infinitesimal · precision · resolution · diameter · thickness
wavelength
Spatial repetition interval
- spectrumContinuous range of values
- emissionDischarged substance or act
- absorptionProcess of taking in
spectral lines · spectrometer · diffraction · crystallography · Bragg · optical · ultraviolet · visible light · photon · electromagnetic
atom
Element's smallest unit
orbital · molecule · crystal · lattice · element · hydrogen · carbon · oxygen · valence · covalent
Swedish
Of a Nordic kingdom
- physicistScientist of matter and energy
- astronomerCelestial bodies researcher
- UppsalaMajor Swedish cathedral city
nineteenth century · SI · metric system · scientific notation
angstromlight-year
Astronomical distance measure
parsec · astronomical unit · megaparsec · kilometer · mile