| rapid-neutron process |
rapid prototyping |
rapids |
Rapitan-type granular iron formation |
RAR |
| rare-earth element |
rare earth elements |
rare-earth elements |
rarefaction |
rare gas |
| rare gases |
RAS |
RASAD-1 |
Rasalgethi |
Rasalhague |
| RASAT |
Rasch, Georg (1901–80) |
Raschig, Friedrich (Fritz) August |
Raschig process |
Raschig ring |
| Raschig synthesis |
Rasch model |
Ra-Shalom |
Rashba effect |
Rashid Ali al-Ghailani (1892–1965) |
| RasMol |
Raspberry Pi |
RAS protein |
Rasputin, Grigori (1871–1916) |
R association |
| Rassvet |
Rastafarian |
raster |
raster data |
raster display |
| raster graphic |
raster graphics |
raster image processor |
rasterizer |
rasterop |
| raster scan |
raster-scan display |
raster scanning |
RATAN-600 |
Ratana, Tahupotiki Wiremu (1873–1939) |
| ratchet effect |
rate |
rateable value |
rate constant |
rate-determining step |
| rate-limiting step |
rate of change |
rate of convergence |
rate of exchange |
rate of growth |
| rate of interest |
rate of return |
rate of return regulation |
rates |
rate support grant |
| Rathenau, Walther (1867–1922) |
rating |
rating site |
ratio |
ratio adjuster |
| ratiocination |
ratio circuit |
ratioless circuit |
rational canonical form |
rational choice theory |
| rational expectations |
rational function |
rational ignorance |
rationalism |
rationality |
| rationalization |
rationalize |
rationalized MKS system |
rationalized Planck constant |
rationalized units |
| rational language |
rational number |
rational reconstruction |
rational type |
rationing |
| ratio scale |
ratio test |
Ratitae |
rat-race |
rattlesnake |
| Raukumara |
Raunkiaer, Christen |
Raup, David Malcolm |
RAVAN |
raven |
| ravens, paradox of |
Ravenstein’s ‘laws’ of migration |
ravinement surface |
ravine wind |
raw data |
| raw error rate |
rawinsonde |
Rawlings, Jerry (1947–2020) |
Rawlsian social welfare function |
Rawls, John (1921–2002) |
| raw materials |
Rawtheyan |
RAX |
ray |
ray casting |
| Ray, John |
Rayleigh criterion |
Rayleigh distribution |
Rayleigh equation |
Rayleigh fading |
| Rayleigh, John William Strutt |
Rayleigh limit |
Rayleigh, Lord |
Rayleigh, Lord (1842–1919) |
Rayleigh number |
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