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LUMIERE LASER [8 records]

Record 1 2024-01-27

English

Subject field(s)
  • Lasers and Masers
  • Optics
CONT

A ray of laser light differs from that of ordinary light in that the former is much more intense, directional, monochromatic and coherent.

French

Domaine(s)
  • Masers et lasers
  • Optique
CONT

Les propriétés les plus frappantes de la lumière laser sont une luminance et une directivité extrêmes.

Spanish

Save record 1

Record 2 2006-11-02

English

Subject field(s)
  • Coal Preparation
CONT

Particle sizes and distribution can be successfully measured using low angle laser light scattering (LALLS). This technique uses a light source of known wavelength to cause oscillation of the dipoles present in the particles. The electromagnetic energy released from these oscillating dipoles, known as secondary radiation, radiates out in all directions except along the axis of oscillation. The ratio between the wavelength of incident radiation and the particle size will determine the actual light scattering pattern from the particle.

CONT

Low-angle laser light scattering and thermal analysis techniques will be used to characterize emulsions/demulsifiers.

French

Domaine(s)
  • Préparation des charbons
CONT

Diffraction de lumière laser aux petits angles. Lorsqu'une particule sphérique est éclairée par un faisceau parallèle de lumière cohérente et monochromatique, un motif de diffraction vient se superposer à l'image géométrique. Ce motif est grand par rapport à l'image, les petites particules diffractant la lumière suivant un angle plus grand que les grosses particules. Une gamme granulométrique peut être divisée en intervalles de taille qui génèrent chacun un motif de diffraction en fonction de sa taille moyenne, avec une intensité fonction du nombre de particules qu'il contient. On peut donc obtenir la distribution granulométrique en analysant le motif de diffraction.

Spanish

Save record 2

Record 3 2004-04-13

English

Subject field(s)
  • Informatics
OBS

CD-ROM

French

Domaine(s)
  • Informatique
OBS

CD-ROM

Spanish

Save record 3

Record 4 1989-04-03

English

Subject field(s)
  • Scientific Measurements and Analyses
  • Environmental Studies and Analyses
  • Air Pollution
CONT

DIAL Techniques. DIAL (Differential Absorption of Laser Light) uses a two or more wavelength LIDAR to examine the absorption of a pollutant. By subtracting the effect from the non-absorbed wavelength, the system can be made specific to a certain pollutant. DIAL systems have been used for remotely measuring SO2 but at the present time sensitivity is low requiring tens to hundreds of parts per million concentrations.

French

Domaine(s)
  • Mesures et analyse (Sciences)
  • Études et analyses environnementales
  • Pollution de l'air

Spanish

Save record 4

Record 5 1989-02-16

English

Subject field(s)
  • Lasers and Masers

French

Domaine(s)
  • Masers et lasers

Spanish

Save record 5

Record 6 1988-09-26

English

Subject field(s)
  • Lasers and Masers

French

Domaine(s)
  • Masers et lasers

Spanish

Save record 6

Record 7 1987-07-20

English

Subject field(s)
  • Lasers and Masers

French

Domaine(s)
  • Masers et lasers

Spanish

Save record 7

Record 8 1984-11-05

English

Subject field(s)
  • Lasers and Masers
  • Optics

French

Domaine(s)
  • Masers et lasers
  • Optique

Spanish

Save record 8

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