Unit Eph
Name exaphot
Category Illuminance
Details The unit Eph, or exaphot, is a unit of illuminance in the field of photometry, which is the science of measuring light in terms of its perceived brightness to the human eye. Illuminance is defined as the amount of luminous flux (or light) incident on a surface per unit area, and it plays a significant role in measuring and describing the light levels within various environments, such as in buildings, outdoor spaces, and more.

An exaphot (Eph) is a unit of measurement for illuminance equal to 10^18 phot or 10^15 lux. The term "exa" is a prefix used in the International System of Units (SI) to denote a factor of 10^18, and "phot" is another unit of illuminance that is equal to one lux. Thus, an exaphot is an extremely large unit of illuminance and is generally not used for most practical applications. Instead, smaller units like lux (lx) or foot-candles (fc) are commonly employed in typical lighting design and evaluation situations.
Eph(exaphot) to alx(attolux)Eph(exaphot) to aph(attophot)Eph(exaphot) to clx(centilux)Eph(exaphot) to cph(centiphot)Eph(exaphot) to dalx(decalux)Eph(exaphot) to daph(decaphot)Eph(exaphot) to dlx(decilux)Eph(exaphot) to dph(deciphot)Eph(exaphot) to Elx(exalux)Eph(exaphot) to fc(foot-candle)Eph(exaphot) to flx(femtolux)Eph(exaphot) to fph(femtophot)Eph(exaphot) to Glx(gigalux)Eph(exaphot) to Gph(gigaphot)Eph(exaphot) to hlx(hectolux)Eph(exaphot) to hph(hectophot)Eph(exaphot) to klx(kilolux)Eph(exaphot) to kph(kilophot)Eph(exaphot) to lm/am²(lumen per square attometre)Eph(exaphot) to lm/cm²(lumen per square centimetre)Eph(exaphot) to lm/dam²(lumen per square decametre)Eph(exaphot) to lm/dm²(lumen per square decimetre)Eph(exaphot) to lm/Em²(lumen per square exametre)Eph(exaphot) to lm/fm²(lumen per square femtometre)Eph(exaphot) to lm/ft²(lumen per square foot)Eph(exaphot) to lm/Gm²(lumen per square gigametre)Eph(exaphot) to lm/hm²(lumen per square hectometre)Eph(exaphot) to lm/in²(lumen per square inch)Eph(exaphot) to lm/km²(lumen per square kilometre)Eph(exaphot) to lm/Mm²(lumen per square megametre)Eph(exaphot) to lm/mm²(lumen per square millimetre)Eph(exaphot) to lm/m²(lumen per square metre)Eph(exaphot) to lm/nm²(lumen per square nanometre)Eph(exaphot) to lm/Pm²(lumen per square petametre)Eph(exaphot) to lm/pm²(lumen per square picometre)Eph(exaphot) to lm/Tm²(lumen per square terametre)Eph(exaphot) to lm/ym²(lumen per square yoctometre)Eph(exaphot) to lm/Ym²(lumen per square yottametre)Eph(exaphot) to lm/zm²(lumen per square zeptometre)Eph(exaphot) to lm/Zm²(lumen per square zettametre)Eph(exaphot) to lm/µm²(lumen per square micrometre)Eph(exaphot) to lx(lux)Eph(exaphot) to Mlx(megalux)Eph(exaphot) to mlx(millilux)Eph(exaphot) to Mph(megaphot)Eph(exaphot) to mph(milliphot)Eph(exaphot) to nlx(nanolux)Eph(exaphot) to nph(nanophot)Eph(exaphot) to nx(nox)Eph(exaphot) to ph(phot)Eph(exaphot) to Plx(petalux)Eph(exaphot) to plx(picolux)Eph(exaphot) to Pph(petaphot)Eph(exaphot) to pph(picophot)Eph(exaphot) to Tlx(teralux)Eph(exaphot) to Tph(teraphot)Eph(exaphot) to ylx(yoctolux)Eph(exaphot) to Ylx(yottalux)Eph(exaphot) to yph(yoctophot)Eph(exaphot) to Yph(yottaphot)Eph(exaphot) to zlx(zeptolux)Eph(exaphot) to Zlx(zettalux)Eph(exaphot) to zph(zeptophot)Eph(exaphot) to Zph(zettaphot)Eph(exaphot) to µlx(microlux)Eph(exaphot) to µph(microphot)