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26 12, 2017

Air temperature profile

By |2019-01-30T18:04:16+10:00December 26th, 2017|Comments Off on Air temperature profile

A record of the fluctuation of air temperature in the same location over a periodof time.

26 12, 2017

PAR

By |2019-01-30T18:06:35+10:00December 26th, 2017|Comments Off on PAR

Photosynthetically Active Radiation; approximately equivalent to visible light radiatio

26 12, 2017

UV Light

By |2019-01-30T21:47:56+10:00December 26th, 2017|Comments Off on UV Light

The UltraViolet part of the light spectrum. having or employing wavelengths shorter than light but longer than X-rays; lying outside the visible spectrum at its violet end; "ultraviolet radiation".

26 12, 2017

Evapotranspiration

By |2019-01-30T21:54:07+10:00December 26th, 2017|Comments Off on Evapotranspiration

The term describing water loss from plants through emission of water vapour via the leaves by transpiration – can be a major form of stress for plants. Evaporation: the process of extracting moisture; moisture becoming a vapour, Transpiration: the emission of water vapor from the leaves of plants.

26 12, 2017

Microclimate

By |2019-01-30T21:56:46+10:00December 26th, 2017|Comments Off on Microclimate

Microclimate the average climatic conditions in a very localised area. Micro: extremely small in scale or scope; Climate: the weather in some location averaged over a long period of time.

26 12, 2017

Turbulence

By |2019-01-30T22:01:06+10:00December 26th, 2017|Comments Off on Turbulence

Unstable flow (of a liquid or gas).

26 12, 2017

Wind Force

By |2019-01-31T12:10:14+10:00December 26th, 2017|0 Comments

Its full name is the Beaufort wind force scale, although it is a measure of wind speed and not of force in the scientific sense. Wind force is what you feel when you try to stand up in a strong wind. Wind force is what blows the dust, bends the trees etc.

26 12, 2017

Shade Levels

By |2019-01-31T12:13:54+10:00December 26th, 2017|Comments Off on Shade Levels

Shade levels under coloured and white fabrics are measured in PAR (photsynthetically active radiation). This is approximately equivalent to visible radiation; 100% shade is solid.A white fabric will typically have a shade level of about 7/10 of that of a black fabric of the same weave.

26 12, 2017

Light spectrum

By |2019-01-31T12:17:48+10:00December 26th, 2017|Comments Off on Light spectrum

The ordered array of the components of light. The colour of the fabric influences the colour (or spectrum) of the light that is absorbed, and hence the spectrum “seen” by the plants. Black fabrics absorb all light equally. White and "clear" fabrics have a reduced effect on the ultra-violets, but a similar effect to black on the infra-reds.