Besaran cahaya: Perbedaan antara revisi

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Sebaris

Revisi terkini sejak 7 Juli 2021 05.50

Satuan besaran cahaya

SI radiometry units
Quantity	Symbol	SI unit	Abbr.	Notes
Radiant energy	Q	joule	J	energy
Radiant flux		watt	W	radiant energy per unit time, also called radiant power
Radiant intensity	I	watt/steradian	W.sr⁻¹	power per unit solid angle
Radiance	L	watt/steradian/square meter	W.sr⁻¹.m⁻²	power per unit solid angle per unit projected source area called intensity in some other fields of study
Irradiance	E, I	watt/square meter	W.m⁻²	power incident on a surface, sometimes confusingly called intensity
Radiant exitance / Radiant emittance	M	watt/square meter	W.m⁻²	power emitted from a surface
Radiosity	J or J_$\lambda$	watt/square meter	W.m⁻²	emitted plus reflected power leaving a surface
Spectral radiance	L_$\lambda$ or L_v	watt/steradian/meter³ or watt/steradian/square meter/hertz	W.sr⁻¹.m.⁻³ or W.sr⁻¹.m⁻².Hz⁻¹	commonly measured in W.sr⁻¹.m⁻².nm⁻¹
Spectral irradiance	E_$\lambda$ or E_v	watt/meter³ or watt/square meter/hertz	W.m⁻³ or W.m⁻².Hz⁻¹	commonly measured in W.m⁻².nm⁻¹
SI photometry units
Quantity	Symbol	SI unit	Abbr.	Notes
Luminous energy	Q_v	lumen second	lm.s	units are sometimes called talbots
Luminous flux	F	lumen (= cd.sr)	lm	also called luminous power
Luminous intensity	I_v	candela (=lumen/sr)	cd	an SI base unit
Luminance	L_v	candela/square meter	cd/m²	units are sometimes called "nits"
Illuminance	E_v	lux (= lm/m²)	lx	used for light incident on a surface
Luminous emittance	M_v	lux (= lm/m²)	lx	used for light emitted on a surface
Luminous efficacy		lumen/watt	lm/W	ratio of luminouos flux to radiant flux

Sumber Cahaya

Radiasi panas (radiasi benda hitam)
- bola lampu
- matahari
- partikel padat bercahaya dalam suhu tinggi(lihat api)
emisi spektral atomik
- laser dan maser
- light emitting diode
- lampu gas(lampu neon, lampu air raksa lamps dsb)
- api dari gas
percepatan dari partikal bebas bermuatan(biasanya sebuah elektron)
- radiasi siklotron
- Radiasi Bremsstrahlung
- Radiasi Cherenkov
kemoluminesens
floresens
fosforescence
- tabung sinar katode
bioluminesens
sonoluminesens
triboluminesens
peluruhan radioaktif
anihilasi partikel-antipartikel

Referensi

Artikel bertopik fotografi ini adalah sebuah rintisan. Anda dapat membantu Wikipedia dengan mengembangkannya.

@@ Baris 1: / Baris 1: @@
+{{paragraf pembuka}}
-==Satuan besaran [[cahaya]]==
+{{terjemah|Inggris}}
+{{noref}}
+== Satuan besaran [[cahaya]] ==
 {| class="wikitable" width="100%"
 |-
@@ Baris 25: / Baris 28: @@
 | ''I''
 | watt/steradian
-| W.sr<sup>-1</sup>
+| W.sr<sup>−1</sup>
 | power per unit solid angle
 |-
@@ Baris 31: / Baris 34: @@
 | ''L''
 | watt/steradian/square meter
-| W.sr<sup>-1</sup>.m<sup>-2</sup>
+| W.sr<sup>−1</sup>.m<sup>−2</sup>
 | power per unit solid angle per unit ''projected'' source area called ''intensity'' in some other fields of study
 |-
@@ Baris 37: / Baris 40: @@
 | ''E'', ''I''
 | watt/square meter
-| W.m<sup>-2</sup>
+| W.m<sup>−2</sup>
 | power incident on a surface, sometimes confusingly called ''intensity''
 |-
@@ Baris 43: / Baris 46: @@
 | ''M''
 | watt/square meter
-| W.m<sup>-2</sup>
+| W.m<sup>−2</sup>
 | power emitted from a surface
 |-
@@ Baris 49: / Baris 52: @@
 | ''J'' or ''J''<sub><math>\lambda</math></sub>
 | watt/square meter
-| W.m<sup>-2</sup>
+| W.m<sup>−2</sup>
 | emitted plus reflected power leaving a surface
 |-
@@ Baris 55: / Baris 58: @@
 | ''L''<sub><math>\lambda</math></sub> {{br}}or{{br}} ''L''<sub>v</sub>
 | watt/steradian/meter<sup>3</sup> {{br}}or{{br}} watt/steradian/square meter/hertz
-| W.sr<sup>-1</sup>.m.<sup>-3</sup> {{br}}or{{br}} W.sr<sup>-1</sup>.m<sup>-2</sup>.Hz<sup>-1</sup>
+| W.sr<sup>−1</sup>.m.<sup>−3</sup> {{br}}or{{br}} W.sr<sup>−1</sup>.m<sup>−2</sup>.Hz<sup>−1</sup>
-| commonly measured in W.sr<sup>-1</sup>.m<sup>-2</sup>.nm<sup>-1</sup>
+| commonly measured in W.sr<sup>−1</sup>.m<sup>−2</sup>.nm<sup>−1</sup>
 |-
 | Spectral irradiance
 | ''E''<sub><math>\lambda</math></sub> {{br}}or{{br}} ''E''<sub>v</sub>
 | watt/meter<sup>3</sup> {{br}}or{{br}} watt/square meter/hertz
-| W.m<sup>-3</sup> {{br}}or{{br}} W.m<sup>-2</sup>.Hz<sup>-1</sup>
+| W.m<sup>−3</sup> {{br}}or{{br}} W.m<sup>−2</sup>.Hz<sup>−1</sup>
-| commonly measured in W.m<sup>-2</sup>.nm<sup>-1</sup>
+| commonly measured in W.m<sup>−2</sup>.nm<sup>−1</sup>
 |-
 !colspan="5"|SI photometry units
@@ Baris 116: / Baris 119: @@
 == Sumber Cahaya ==
 * Radiasi panas (radiasi [[benda hitam]])
 ** [[bola lampu]]
 ** [[matahari]]
 ** partikel padat bercahaya dalam suhu tinggi(lihat [[api]])
 * emisi spektral atomik
 ** [[laser]] dan [[maser]]
 ** [[light emitting diode]]
@@ Baris 141: / Baris 144: @@
 == Referensi ==
 {{reflist}}
+{{Authority control}}
+[[Kategori:Fisika]]
 {{Fotografi-stub}}