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INDIRECT WAVE [3 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2013-11-05

English

Subject field(s)
  • Radio Waves
  • Radar, Radio Guidance and Goniometry
DEF

A radio wave propagating along an indirect ray path.

OBS

indirect wave : term and definition standardized by the International Electrotechnical Commission.

French

Domaine(s)
  • Ondes radioélectriques
  • Radar, radioguidage et radiogoniométrie

Spanish

Save record 1

Record 2 2011-10-17

English

Subject field(s)
  • Solar Energy
  • Energy Transformation
DEF

Energy derived ultimately from the sun.

CONT

Most energy sources on Earth are forms of indirect solar energy, although we usually don’t think of them in that way. Coal, oil and natural gas derive from ancient biological material which took its energy from the sun(via plant photosynthesis) millions of years ago. All the energy in wood and foodstuffs also comes from the sun. Movement of the wind(which causes waves at sea), and the evaporation of water to form rainfall which accumulates in rivers and lakes, are also powered by the sun. Therefore, hydroelectric power and wind and wave power are forms of indirect solar energy. Direct solar energy is what we usually mean when we speak of solar power-it is the use of sunlight for heating or generating electricity.

OBS

The term "solar energy" may be applied to any of the numerous ways in which this energy flow may be converted and utilised: as biological energy, wind energy, wave energy, ocean thermal energy, and especially as direct heat ... and photovoltaic energy.

French

Domaine(s)
  • Énergie solaire
  • Transformation de l'énergie
DEF

Énergie gratuite contenue dans le rayonnement quotidien du soleil.

Spanish

Campo(s) temático(s)
  • Energía solar
  • Transformación de la energía
DEF

Energía transmitida desde el Sol en forma de radiación electromagnética.

Save record 2

Record 3 1981-04-03

English

Subject field(s)
  • Air Transport

French

Domaine(s)
  • Transport aérien

Spanish

Save record 3

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