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Hectoroentgen (hR) Unit Definition
The hectoroentgen is a multiple of the unit roentgen (R) for radiation exposure. The International System of Units (SI) defines the prefix hecto (h) as a factor of one hundred. Per this definition, one hectoroentgen is 100 roentgens. The hectoroentgen is represented by the symbol hR.
SI Multiples
A table of various radiation exposure roentgen derived from SI multiples:
Submultiples |
Multiples |
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Scientific Notation |
Value |
Prefix |
Name |
Scientific Notation |
Value |
Prefix |
Name |
10-1 R |
0.1 R |
Deci (d) | Deciroentgen (dR) | 101 R |
10 R |
Deca (da) | Decaroentgen (daR) |
10-2 R |
0.01 R |
Centi (c) | Centiroentgen (cR) | 102 R |
100 R |
Hecto (h) | Hectoroentgen (hR) |
10-3 R |
0.001 R |
Milli (m) | Milliroentgen (mR) | 103 R |
1000 R |
Kilo (k) | Kiloroentgen (kR) |
10-6 R |
0.000001 R |
Micro (µ) | Microroentgen (µR) | 106 R |
1000000 R |
Mega (M) | Megaroentgen (MR) |
10-9 R |
0.000000001 R |
Nano (n) | Nanoroentgen (nR) | 109 R |
1000000000 R |
Giga (G) | Gigaroentgen (GR) |
10-12 R |
0.000000000001 R |
Pico (p) | Picoroentgen (pR) | 1012 R |
1000000000000 R |
Tera (T) | Teraroentgen (TR) |
10-15 R |
0.000000000000001 R |
Femto (f) | Femtoroentgen (fR) | 1015 R |
1000000000000000 R |
Peta (P) | Petaroentgen (PR) |
10-18 R |
0.000000000000000001 R |
Atto (a) | Attoroentgen (aR) | 1018 R |
1000000000000000000 R |
Exa (E) | Exaroentgen (ER) |
10-21 R |
0.000000000000000000001 R |
Zepto (z) | Zeptoroentgen (zR) | 1021 R |
1000000000000000000000 R |
Zetta (Z) | Zettaroentgen (ZR) |
10-24 R |
0.000000000000000000000001 R |
Yocto (y) | Yoctoroentgen (yR) | 1024 R |
1000000000000000000000000 R |
Yotta (Y) | Yottaroentgen (YR) |
10-27 R |
0.000000000000000000000000001 R |
Ronto (r) | Rontoroentgen (rR) | 1027 R |
1000000000000000000000000000 R |
Ronna (R) | Ronnaroentgen (RR) |
10-30 R |
0.000000000000000000000000000001 R |
Quecto (q) | Quectoroentgen (qR) | 1030 R |
1000000000000000000000000000000 R |
Quetta (Q) | Quettaroentgen (QR) |
Other Radiation Exposure Unit Definitions
Abcoulomb (abC)
- Attocoulomb (aC)
- Attoparker (aparker)
- Attorep (arep)
- Attoroentgen (aR)
- Centicoulomb (cC)
- Centiparker (cparker)
- Centirep (crep)
- Centiroentgen (cR)
- Coulomb (C)
Coulomb International (C)
- Decacoulomb (daC)
- Decaparker (daparker)
- Decarep (darep)
- Decaroentgen (daR)
- Decicoulomb (dC)
- Deciparker (dparker)
- Decirep (drep)
- Deciroentgen (dR)
- Dekacoulomb (daC)
- Dekaparker (daparker)
- Dekarep (darep)
- Dekaroentgen (daR)
Electronic Charge (q)
- Exacoulomb (EC)
- Exaparker (Eparker)
- Exarep (Erep)
- Exaroentgen (ER)
Faraday Constant (F)
- Femtocoulomb (fC)
- Femtoparker (fparker)
- Femtorep (frep)
- Femtoroentgen (fR)
Franklin (Fr)
- Gigacoulomb (GC)
- Gigaparker (Gparker)
- Gigarep (Grep)
- Gigaroentgen (GR)
- Hectocoulomb (hC)
- Hectoparker (hparker)
- Hectorep (hrep)
- Hectoroentgen (hR)
- Kilocoulomb (kC)
- Kiloparker (kparker)
- Kilorep (krep)
- Kiloroentgen (kR)
- Megacoulomb (MC)
- Megaparker (Mparker)
- Megarep (Mrep)
- Megaroentgen (MR)
- Microcoulomb (μC)
- Microparker (µparker)
- Microrep (µrep)
- Microroentgen (µR)
- Millicoulomb (mC)
- Milliparker (mparker)
- Millirep (mrep)
- Milliroentgen (mR)
- Nanocoulomb (nC)
- Nanoparker (nparker)
- Nanorep (nrep)
- Nanoroentgen (nR)
- Parker (parker)
- Petacoulomb (PC)
- Petaparker (Pparker)
- Petarep (Prep)
- Petaroentgen (PR)
- Picocoulomb (pC)
- Picoparker (pparker)
- Picorep (prep)
- Picoroentgen (pR)
- Quectocoulomb (qC)
- Quectoparker (qparker)
- Quectorep (qrep)
- Quectoroentgen (qR)
- Quettacoulomb (QC)
- Quettaparker (Qparker)
- Quettarep (Qrep)
- Quettaroentgen (QR)
- Rep (rep)
- Roentgen (R)
- Ronnacoulomb (RC)
- Ronnaparker (Rparker)
- Ronnarep (Rrep)
- Ronnaroentgen (RR)
- Rontocoulomb (rC)
- Rontoparker (rparker)
- Rontorep (rrep)
- Rontoroentgen (rR)
Statcoulomb (statC)
- Teracoulomb (TC)
- Teraparker (Tparker)
- Terarep (Trep)
- Teraroentgen (TR)
Tissue Roentgen (R)
- Yoctocoulomb (yC)
- Yoctoparker (yparker)
- Yoctorep (yrep)
- Yoctoroentgen (yR)
- Yottacoulomb (YC)
- Yottaparker (Yparker)
- Yottarep (Yrep)
- Yottaroentgen (YR)
- Zeptocoulomb (zC)
- Zeptoparker (zparker)
- Zeptorep (zrep)
- Zeptoroentgen (zR)
- Zettacoulomb (ZC)
- Zettaparker (Zparker)
- Zettarep (Zrep)
- Zettaroentgen (ZR)
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Related Definitions
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Sources
“Roentgen (Unit).” Wikipedia, Wikimedia Foundation, 4 Sept. 2023, en.wikipedia.org/wiki/Roentgen_(unit).