Photometer/Radiometer J16

Tektronix; Portland, OR

Dati
Forum
Immagini
Collezioni

  • Anno
  • 1973
  • Categoria
  • Strumento da laboratorio
  • Radiomuseum.org ID
  • 246435

 Specifiche tecniche

  • Numero di transistor
  • A semiconduttori.
  • Semiconduttori
  • Tensioni di funzionamento
  • Batteria di accumulatori, per tutto (es. autoradio, radio amatoriali) / 7.6 Volt
  • Altoparlante
  • - - Nessuna uscita audio.
  • Materiali
  • Mobile di metallo
  • Radiomuseum.org
  • Modello: Photometer/Radiometer J16 - Tektronix; Portland, OR
  • Forma
  • Soprammobile con qualsiasi forma (non saputo).
  • Dimensioni (LxAxP)
  • 123 x 60 x 203 mm / 4.8 x 2.4 x 8 inch
  • Annotazioni

  • Th J16 is a portable digital photometer/radiometer capable of making variety of light measurement.
    3 1/2 digit LED readout
    Stability: Within 2% per year
    Linearity: Within 2% over the entire range, enable single point calibration
    Power Requirements: Internal rechargeable NiCd batteries
    Suitable Probe: Tektronix Irradiance Probe J6502

  • Peso netto
  • 1.5 kg / 3 lb 4.9 oz (3.304 lb)
  • Bibliografia
  • - - Manufacturers Literature
  • Autore
  • Modello inviato da Pius Steiner. Utilizzare "Proponi modifica" per inviare ulteriori dati.

 Collezioni | Musei | Letteratura

Collezioni

Il modello Photometer/Radiometer fa parte delle collezioni dei seguenti membri.

 Forum

Discussioni nel forum su questo modello: Tektronix; Portland,: Photometer/Radiometer J16

Argomenti: 1 | Articoli: 1

GLOSSARY

Photometry
The measurement of light visible to the human eye.

Radiometry
The measurement of light within the total optical spectrum.

Color Temperature
The temperature of a blackbody whose radiation has the same visible color as that of a given non-blackbody radiator. Usually expressed in °k.

Foot-candle
Unit of incident illumination.

Foot-lambert
A unit of illumination emitted or diffusely reelected by a source. Two additional units are commonly used:
the lux (the metric unit of illuminance) and
the nit (the metric unit of luminance).
1 foot-candle = 10.76 lux
1 foot-lambert = 3.426 nits

Illuminance
The amount of luminous flux through a unit of surface area and is usually measured in foot-candles (lumens/ft2).

Inverse Square Law
The decrease of light intensity with increasing distance. Twice the distance, reduces the illumination to one-quarter.

Irradiance
The amount of radiant flux received by a unit of surface area and is usually measured in watts/cm2 *.
* Other units of irradiance such as uW/cm2 and W/m2 are also used extensively.

Lambert's Law
Describes the spatial characteristics of a perfectly diffusing surface which may be either emitting or reflecting light. The light emitted or accepted by such a surface decreases with angle (from perpendicular) according to the cosine of the angle.

Luminance
The amount of light emitted or scattered by a surface and is usually measured in  foot-lamberts.

Photopic
Spectral (color) sensitivity of the average human eye, predominantly peaked in the yellow-green region.

Steradian
A unit of area on the surface of a sphere equal to the radius squared. There are 12.6 steradians total area on a sphere.

Spatial
The directional characteristics of light in space.

Spectral
The distribution of light by wavelength within an electromagnetic spectrum.

Note that each radiometric unit has a photometric equivalent differing only in spectral response of the sensor. However, the units are not interchangeable.

PROBE CHARACTERISTICS

for probes: J6501 J6511 J6502/J6512 J6503 J6523 J6504 J6505

Source: Tektronix Catalog 1986

Allegati

Pius Steiner, 03.Jan.14

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