Sentences with phrase «sun at zenith»

The following values tell the share of absorption in a top layer of several thicknesses from 1µm to 1 km for sun at zenith.

[3] At ground level this decreases to about 1120 — 1000 watts / m2, and by energy fractions to 44 % visible light, 3 % ultraviolet (with the Sun at the zenith, but less at other angles), and the remainder infrared.

sunlight's composition at ground level, per square meter, with the sun at the zenith, is about 527 watts of infrared radiation, 445 watts of visible light, and 32 watts of ultraviolet radiation.

«Sunlight's composition at ground level, per square meter, with the sun at the zenith, is about 527 watts of infrared radiation, 445 watts of visible light, and 32 watts of ultraviolet radiation.»

And if you go to wiki, sunlight: http://en.wikipedia.org/wiki/Sunlight You find this graph: And wiki says, «Sunlight's composition at ground level, per square meter, with the sun at the zenith, is about 527 watts of infrared radiation, 445 watts of visible light, and 32 watts of ultraviolet radiation.»

In clear skies at noon with sun at zenith at Earth distance, you have 1000 watts, which is a reduction of 360 watts from TOA of 1360 watts per square meter, which less than 27 % reduction or more than 73 % of sunlight reaches the surface.

Or: «Sunlight's composition at ground level, per square meter, with the sun at the zenith, is about 527 watts of infrared radiation, 445 watts of visible light, and 32 watts of ultraviolet radiation.»

And that limit is around the temperature of lunar surface in daylight with sun at zenith.

> sun at zenith I know, David, that's the way to locate such possible sources; sun angle shallower than slope so the sun doesn't reach the site.

Not exact matches

There are celebrations planned at Stonehenge and in Santa Barbara (though I'm betting they'll be very different in style), but even if you're not in one of the places where the sun being at its zenith is a traditional occasion to party, you might want to consider putting that extra sunlight to good use.

The «hot sun» of the title symbolises a Modernism at its blazing zenith, embodied in the work of Van Gogh as from February 1888, when the Dutch artist discovered Provence.

Hank Roberts @ 31 — Better check just how far north the sun is at zenith in the summer (in Washington state).

The sun warms up your location, when its at zenith temperatures are usually warmer than at midnight on a clear night, this is a solar effect.

If each day for several years a clock reads exactly 10:17 AM when the sun is at the zenith, this clock is very precise.

The measurement of the clock (twelve) and the phenomena it is meant to measure (The sun located at zenith) are in agreement.

When the sun is on the horizon, look at the sea — you will start sneezing, same as looking at the sun = when the sun is at the zenith — a lot is instantly reflected; get that on board;» most» is NOT absorbed.