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Incident radiant energy per area
In radiometry, radiant exposure or fluence is the radiant energy received by a surface per unit area, or equivalently the irradiance of a surface, integrated
Radiant_exposure
Amount of light captured by a camera
photometric exposure (Hv) is the same so long as the total exposure time is the same. Radiant exposure of a surface, denoted He ("e" for "energetic", to avoid
Exposure_(photography)
Energy carried by electromagnetic or gravitational radiation
radiometry, radiant energy is the energy of electromagnetic and gravitational radiation. As energy, its SI unit is the joule (J). The quantity of radiant energy
Radiant_energy
Intensity of electromagnetic radiation
radiometry, radiant intensity is the radiant flux emitted, reflected, transmitted or received, per unit solid angle, and spectral intensity is the radiant intensity
Radiant_intensity
Measure of radiant energy over time
In radiometry, radiant flux or radiant power is the radiant energy emitted, reflected, transmitted, or received per unit time, and spectral flux or spectral
Radiant_flux
Physical quantity in radiometry
In radiometry, radiance is the radiant flux emitted, reflected, transmitted or received by a given surface, per unit solid angle per unit projected area
Radiance
Radiant flux per unit area
In radiometry, radiant exitance or radiant emittance is the radiant flux emitted by a surface per unit area, whereas spectral exitance or spectral emittance
Radiant_exitance
Measure of radiant energy over surface area
In radiometry, irradiance is the radiant flux received by a surface per unit area. The SI unit of irradiance is the watt per square metre (symbol W⋅m−2
Irradiance
Radiant energy per unit volume
radiometry, radiant energy density is the radiant energy per unit volume. The SI unit of radiant energy density is the joule per cubic metre (J/m3). Radiant energy
Radiant_energy_density
Measurement of electromagnetic radiation (esp. optical radiation)
Alternative symbols sometimes seen: W or E for radiant energy, P or F for radiant flux, I for irradiance, W for radiant exitance. Spectral quantities given per
Radiometry
Mathematical concept applicable to physics
Alternative symbols sometimes seen: W or E for radiant energy, P or F for radiant flux, I for irradiance, W for radiant exitance. Spectral quantities given per
Flux
Measurement of visible light
(e.g., luminous flux) are related to their radiometric analogs (e.g., radiant flux) through standardized luminous efficiency functions that model the
Photometry_(optics)
Disinfection method using ultraviolet light
e. radiant exposure or fluence. The fluence a microbe is exposed to is the product of the light intensity, i.e. irradiance and the time of exposure, according
Ultraviolet germicidal irradiation
Ultraviolet_germicidal_irradiation
Physical quantity in radiometry
In radiometry, radiosity is the radiant flux leaving (emitted, reflected and transmitted by) a surface per unit area, and spectral radiosity is the radiosity
Radiosity_(radiometry)
Amount of power radiated through a given area
called irradiance. Flux emitted from a surface may be called radiant exitance or radiant emittance. The ratio of irradiance reflected to the irradiance
Radiative_flux
Energy conversion in optics
efficiency or radiant efficiency is the energy conversion efficiency with which the system converts electrical power into radiant flux (radiant power). It
Wall-plug_efficiency
Measurement unit derived from basic metric value
pascal Pa−1 compressibility m⋅kg−1⋅s2 joule per square metre J/m2 radiant exposure kg⋅s−2 kilogram square metre kg⋅m2 moment of inertia m2⋅kg newton metre
SI_derived_unit
Form of central heating and cooling
known as thermally activated building systems or TABS. The terms radiant heating and radiant cooling are commonly used to describe this approach because radiation
Underfloor_heating
Species of bacterium
ultraviolet) range due to an endogenic porphyrin–coporphyrin III. A total radiant exposure of 320 J/cm2 inactivates this species in vitro. Its photosensitivity
Cutibacterium_acnes
square centimetre, 41 840 J/m2 (joules per square metre) Solar constant Radiant exposure Gyllenbok, Jan (2018). "langley". Encyclopaedia of Historical Metrology
Langley_(unit)
Energy per volume
gas pressure of a plasma. When a pulsed laser impacts a surface, the radiant exposure, i.e. the energy deposited per unit of surface, may also be called
Energy_density
System of codes for unambiguously representing measurement units
millipascal mPa−1 compressibility m⋅g−1⋅s2 millijoule per square metre mJ/m2 radiant exposure g⋅s−2 gram square metre per steradian g⋅m2/sr moment of inertia m2⋅g⋅rad−2
Unified Code for Units of Measure
Unified_Code_for_Units_of_Measure
Electromagnetic radiation generated by the thermal motion of particles
The mean radiant temperature is a metric used to quantify the exchange of radiant heat between a human and their surrounding environment. Radiant personal
Thermal_radiation
Specialized agency of the United Nations
square metre (W/m2) for irradiance. Joules per square metre (J/m2) for radiant exposure. Oktas for cloud cover. The World Meteorological Organization at a
World Meteorological Organization
World_Meteorological_Organization
Professional society for fire protection engineering
Performance-Based Design Review Piloted Ignition of Solid Materials Under Radiant Exposure Evaluation of the Computer Fire Model DETACT-QS Engineering Guide to
Society of Fire Protection Engineers
Society_of_Fire_Protection_Engineers
2009 studio album by ISIS
Wavering Radiant is the fifth and final studio album by the American post-metal group Isis, released by Ipecac Recordings in 2009 and produced by Joe
Wavering_Radiant
Toast is sliced bread that has been browned by exposure to radiant heat. It appears as a main ingredient in many dishes, often as a base on which other
List_of_toast_dishes
Photochemical antimicrobial technology
on the interplay of three physical quantities: irradiance, radiant exposure and exposure time. Irradiance is defined as the optical power of the light
Antimicrobial photodynamic therapy
Antimicrobial_photodynamic_therapy
symbol/s Defining equation SI units Dimension Radiant energy Q, E, Qe, Ee J [M][L]2[T]−2 Radiant exposure He H e = d Q / ( e ^ ∠ ⋅ d A ) {\displaystyle
List_of_optics_equations
Apparent temperature estimating how humans are affected
to help employers assess heat exposure by combining measured humidity, temperature, air movement, and direct or radiant sunlight into a single value that
Wet-bulb_globe_temperature
Result of nuclear radiation exposure
radiation in a short period of time. Symptoms can start within an hour of exposure, and can last for several months. Early symptoms are usually nausea, vomiting
Acute_radiation_syndrome
Substance applied to items to slow burning or delay ignition
Retrieved 2021-12-17. Sun, G.; Yoo, H.S.; Zhang, X.S.; Pan, N. (2000-07-01). "Radiant Protective and Transport Properties of Fabrics Used by Wildland Firefighters"
Flame_retardant
Thermal processing of thin film using pulsed light
the case of photonic curing, the radiant power is higher and the pulse length is shorter. The total radiant exposure per pulse is less with photonic curing
Photonic_curing
Clothing to protect against an extreme environment
protects the wearer against extreme radiant heat Inspections and maintenance largely depend on the type of exposure suit used. Common maintenance practices
Exposure_suit
Insulation material
environmental impacts, and more. Sometimes a thermally reflective surface called a radiant barrier is added to a material to reduce the transfer of heat through radiation
Building_insulation_material
Part of the electromagnetic spectrum
bulbs, radiant heaters, welding equipment, etc. Natural optical radiation Natural optical radiation is primarily produced by the Sun. Exposure to optical
Optical_radiation
Satisfaction with the thermal environment
loss, namely metabolic rate, clothing insulation, air temperature, mean radiant temperature, air speed and relative humidity. Psychological parameters
Thermal_comfort
SI unit of luminous intensity
perception of our eyes over scotopic vision. At other frequencies, more radiant intensity is required to achieve the same luminous intensity, according
Candela
Light emitted by the Sun
clouds, it is experienced as sunshine, a combination of bright light and radiant heat (atmospheric). When blocked by clouds or reflected off other objects
Sunlight
Harmful high-frequency radiation
Measurements – US national organisation Nuclear safety Nuclear semiotics Radiant energy Exposure (radiation) Radiation hormesis Radiation physics Radiation protection
Ionizing_radiation
Thermal engineering discipline concerning transfer of heat in physical systems
necessarily good radiant barriers, and vice versa. Metal, for instance, is an excellent reflector and a poor insulator. The effectiveness of a radiant barrier
Heat_transfer
Visible light per unit solid angle
is most sensitive to yellow-green light at 555 nm. Light with the same radiant intensity at other wavelengths has a lower luminous intensity. The curve
Luminous_intensity
Process in which electrical energy is converted to heat
Several methods of electric space heating are used. Electric infrared radiant heating uses heating elements that reach a high temperature. The element
Electric_heating
Burn caused by microwave radiation
degree of damage than muscles and other water-rich tissues. (In contrast, radiant heat, contact burns and chemical burns damage subcutaneous adipose tissue
Microwave_burn
Semiconductor light source
on the sleep-wake cycle of city-dwellers. Critics in the industry claim exposure levels are not high enough to have a noticeable effect. Light pollution:
Light-emitting_diode
American female radiation poisoning victims (1917–1978)
Gutiérrez, C.; Maldonado Cid, P. (2020-12-01). "Radioactive Cosmetics and Radiant Beauty". Actas Dermo-Sifiliográficas (in Spanish). 111 (10): 863–865. doi:10
Radium_Girls
Form of electromagnetic radiation
with Crookes tube experiments and began investigating this invisible, radiant energy. After Röntgen identified the X-ray, Tesla began making X-ray images
X-ray
Device designed to create radiative heat
maximize the exposure of available surfaces which then re-emit the warmth to provide an even all round ambient warmth. This is known as radiant heating. Halogen
Infrared_heater
Type of plastic reinforced by glass fiber
often the mandrel is placed in an oven to achieve this, though sometimes radiant heaters are used with the mandrel still turning in the machine. Once the
Fiberglass
Perceived luminous power
power is the measure of the perceived power of light. It differs from radiant flux, the measure of the total power of electromagnetic radiation (including
Luminous_flux
Perception of light level
square metre lm/m2 L−2⋅J Luminous flux emitted from a surface Luminous exposure Hv lux second lx⋅s L−2⋅T⋅J Time-integrated illuminance Luminous energy
Brightness
American post-metal band
Wavering Radiant". Slant. Retrieved April 11, 2011. "Isis: Wavering Radiant (2009)". Metacritic. Retrieved April 11, 2011. Lists Wavering Radiant appeared
Isis_(band)
American actress (born 1977)
often is not explicit in the dialogue." Empire noted, "Liv Tyler (here radiantly resembling a ganglier young Ava Gardner) with a rare opportunity to enamour
Liv_Tyler
Phenomenon where trousers burst into flames
trousers impregnated therewith would indeed vigorously combust upon exposure to flame, radiant heat, and impact, though their friction tests did not cause ignition
Exploding_trousers
1987 radioactive contamination incident in Brazil
Retrieved April 26, 2025. Joffre, Ruth (May 3, 2024). "Radioactive as in Radiant: On Liliana Colanzi's "You Glow in the Dark"". Los Angeles Review of Books
Goiânia_accident
Net heat load of a worker
remains overlooked. There are few studies and regulations regarding heat exposure of workers. Heat-related illnesses from occupational heat stress is impacted
Occupational_heat_stress
Measurement of electromagnetic radiation
irradiance is often integrated over a given time period in order to report the radiant energy emitted into the surrounding environment (joule per square metre
Solar_irradiance
Wavering Radiant, was released in 2009 and marked the band's first entry in the Billboard 200, peaking at 98; it also saw international commercial exposure, seeing
Isis_discography
Device that applies heat to the base of cookware
cooktop or radiant cooktop has a surface made of low-expansion thermal glass-ceramic that is transparent to infrared. This surface houses radiant or halogen
Cooktop
Actress (born 1983)
called her "a spectacular young actress who imbues Patsey with grit and radiant grace". She was nominated for several awards for 12 Years a Slave, including
Lupita_Nyong'o
DC Comics supervillain
to merge their life forces into a being called the "Radiant", a being of living energy. The Radiant killed the Ultimate with a huge blast of energy, laying
Doomsday_(DC_Comics)
Electric current through a photosensitive device
a photosensitive device, such as a photodiode, as the result of exposure to radiant power. The photocurrent may occur as a result of the photoelectric
Photocurrent
American interdisciplinary scholar (born 1972)
York University Press; ISBN 9780814767375 2018: Looking for Lorraine: The Radiant and Radical Life of Lorraine Hansberry, Beacon Press. ISBN 9780807064498
Imani_Perry
Equipment designed to help protect an individual from hazards
and chemicals, high reflectivity and heat resistance for protection from radiant heat, and high electrical resistivity for protection from electric shock
Personal_protective_equipment
SI derived unit of visible light emission
of visible light emitted by a source. Luminous flux differs from power (radiant flux), which encompasses all electromagnetic waves emitted, including non-visible
Lumen_(unit)
Maldivian politician (born 1984)
Leader of the Maldivian Democratic Party. He was also the Chairman of New Radiant Sports Club. Born on July 20, 1984, Ali Waheed is the only son of Mohamed
Ali_Waheed
Interior fungal growth
mold exposure can lead to a range of health effects, with sensitivity differing from person to person. Indeed, the health impact of its exposure depends
Indoor_mold
Sexual attraction to the stomach or belly
effective at regulating newborn body temperature and homeostasis than using radiant heat alone. Therefore, belly-to-belly contact may help calm the autonomic
Belly_fetish
How efficiently a source produces visible light
System of Units (SI). Depending on context, the power can be either the radiant flux of the source's output, or it can be the total power (electric power
Luminous_efficacy
Room with large glass windows or walls for exposure to sunlight
electrically operated by remote control. Specialized flooring, including radiant heat, may be adapted to both attached and integrated sunrooms. Arizona
Sunroom
Igbo sun deity
(Odinani) Amadioha Ikenga Kingdom of Nri List of solar deities "Anyanwu: The Radiant Igbo Sun God of Light and Life". Ozi Ikoro. Retrieved 2026-06-08. "Patternist
Anyanwu
Helmet that protects eyes during welding
"all filter lenses and plates shall meet the test for transmission of radiant energy prescribed in paragraph 6.3.4.6 of the Safety Code for Head, Eye
Welding_helmet
American graffiti artist (born 1967)
and history make him important to me… Keith had the barking dog and the radiant baby. But it's graphics, not fine art. LA2 created the fill-ins. Those
LA_II
Nickel and chromium alloy
often used in the thermal processing industry for applications such as radiant tubes. It is also commonly used in high-temperature applications in the
Alloy_601
reconstruction Radiation dosimeter Radiation effect radiant energy Radiation enteropathy (radiation exposure) radioactive contamination Radiation flux (radiation
Index_of_radiation_articles
Inhalation of tobacco smoke by persons other than the intended active smoker
leads to its inhalation by nearby bystanders within the same environment. Exposure to passive tobacco smoke causes many of the same health effects caused
Passive_smoking
Perceived light energy
sometimes called the quantity of light. Luminous energy is not the same as radiant energy, the corresponding objective physical quantity. This is because
Luminous_energy
Fiber made from spun molten minerals
DIY Bubble Foil Sheet - 3-in-1 Sustainable Thermal Insulation Reflective Radiant Barrier & Vapour Barrier - Multi Purpose for Home & Auto : Amazon.co.uk:
Mineral_wool
SI derived unit of illuminance
lux rating. Still cameras do not use such a specification, since longer exposure times can generally be used to make pictures at very low illuminance levels
Lux
Tibetan religious item
Fabric amulets with Buddhist texts from South-East Asia Barker, page 14 "Radiant Heart: The Prayer Flag Tradition" (PDF). prayerflags.com. Retrieved 2007-12-29
Prayer_flag
Air quality within and around buildings and structures
IAQ is evaluated through collection of air samples, monitoring human exposure to pollutants, analysis of building surfaces, and computer modeling of
Indoor_air_quality
State of psychological stability and composure
psychological stability and composure which is undisturbed by the experience of or exposure to emotions, pain, or other phenomena that may otherwise cause a loss of
Equanimity
Body that enters the Earth's atmosphere
radiating from a single point in the sky. Careful observers noticed that the radiant, as the point is called, moved with the stars, staying in the constellation
Meteor
Serialized speculative fiction multimedia narrative
11, 2017. Retrieved September 7, 2018. French, Agatha (July 12, 2017). "Radiant children, the future of football and eau de literary hero". Los Angeles
17776
Gelled incendiary mixture
undamaged shelters can be killed by hyperthermia, radiant heat, dehydration, asphyxiation, smoke exposure or carbon monoxide poisoning. Crews of armored
Napalm
Constellation straddling the celestial equator
short straight line of the Orion's Belt asterism. Orion also hosts the radiant of the annual Orionids, the strongest meteor shower associated with Halley's
Orion_(constellation)
Form of cooking that involves dry heat
from the side. Grilling usually involves a significant amount of direct, radiant heat, and tends to be used for cooking meat and vegetables quickly. Food
Grilling
Luminous flux incident on a surface per area
{\displaystyle L_{\mathrm {v} }={\frac {E_{\mathrm {v} }R}{\pi }}} Irradiance Exposure value Luminance "Illuminance, 17-21-060". CIE S 017:2020 ILV: International
Illuminance
Microscopic solid or liquid matter suspended in the Earth's atmosphere
cancer, and preterm birth. There is no safe level for exposure to particulates. Worldwide, exposure to PM2.5 contributed to 7.9 million deaths in 2023;
Particulate_matter
Property of light sources related to black-body radiation
film stock, pre-flashing, and, after shooting, color grading, both by exposure at the labs and also digitally. Cinematographers also work closely with
Color_temperature
French scientist, artist and photographer (1787–1851)
Society For Science & the Public, 1928. Print. Watson, Bruce, "Light: A Radiant History from Creation to the Quantum Age", (London and NY: Bloomsbury,
Louis_Daguerre
American singer (1956–2022)
appeared in the off-Broadway musicals Return to the Forbidden Planet and Radiant Baby in 2004. Her final album, My Secret Life, was released in 2011. Born
Julee_Cruise
American actress
This Summer Feeling Nina 2016 Hell or High Water Debbie Howard In the Radiant City Laura Yurley 2017 The Strange Ones Crystal Aardvark Jenny Sollers
Marin_Ireland
Medical imaging procedure
transform. In October 1963, William H. Oldendorf received a U.S. patent for a "radiant energy apparatus for investigating selected areas of interior objects obscured
CT_scan
Bread that has been exposed to dry heat
Toast is sliced bread that has been browned by radiant heat. The browning is the result of a Maillard reaction altering the flavor of the bread and making
Toast_(food)
installations. External PVC piping is used where failure with exposure to high radiant heat is acceptable[citation needed], as at the time the system
External_water_spray_system
Photography of the naked human body
Jayne Anne (1991). The Last Day of Summer. Aperture. Sturges, Jock (1994). Radiant Identities: Photographs by Jock Sturges. Aperture. ISBN 0893815950. Mann
Nude_photography
American actor (born 1949)
Johnson To Exec Produce & Star Alongside Isabelle Fuhrman In 'Unit 234'; Radiant Films International Launching Sales On Andy Tennant Thriller At Cannes"
Don_Johnson
Specialized leaf structure
primary function of the translucent windows is to increase the absorption of radiant energy, and thereby the rate of photosynthesis. Epidermal windows are commonly
Leaf_window
Radiant light and heat from the Sun, harnessed with technology
Solar energy is the radiant energy from the Sun's light and heat, which can be harnessed using a range of technologies such as solar electricity, solar
Solar_energy
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