In the balmy autumn sun light, I chatted with a cyclist dressed as a crocodile, saw people arriving horizontally on a collection of ornately decorated "recumbent" bikes, and gasped in awe as cyclists literally passed over head on raised, "stilted" bikes.
Would we really be calm and unconcerned if, just as suddenly, real light -- the sun's light -- without notice went away?
The festival links yin and yang, the qualities of light and dark or cold and warmth (among others) to the waxing and waning of the sun's light.
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But a clear, cloudless day-time sky is blue because molecules in the air scatter blue light from the sun more easily than they do red light.
Light therapy (such as from exposure to the sun or another bright light) may also help get you back on track.
Those areas reflect as much as 90% of the sun's light, whereas if you planted trees there they would reflect only about 10%.
And the sky is blue, it says, because the sun produces white light which is made up of all the colours of the rainbow.
"Passive renewable energy" measures, such as using natural ventilation to cool a building and spacing windows to maximize the sun's light, are other ways to slash a building's electric bill.
The reason astronomers want to observe reflected sunlight during the transit of Venus is to test whether they can detect the faint imprint of passage of the sun's light through the atmosphere of Venus.
But it will not be, because the planets in question will all be on the far side of the sun, whose light will drown them out (except for Mars, which will be visible briefly after sunset).
The sun provided much needed light, and the full realization of what had happened was setting in.
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Most of what we get is synthesized in the skin as it absorbs the sun's ultraviolet light.
His many unfiltered statements buy millions of bucks in publicity, his unbridled emotions serve to light up Sun's 39, 000 employees.
In the Bolivian Andes, ice-blue glaciers crown amphitheatres of peaks, llamas graze quietly in the afternoon sun and the evening light fades into frigid mountain nights.
As the Moon's disc began to leave the Sun, it was light again, and birds, which had flown to their nests only minutes earlier, came chirping out again.
The setting seems stark in the midday sun, but when the sun drops and the light shifts, a form of alchemy transforms the scene into one of sensual beauty.
As the sun went down, light shot through the smoke and turned the air around us a dark gold that cast an unsettling radiance on the trees and houses.
Any practiced attendee of the Academy Awards will tell you that the best time to glide across the red carpet is at the end of arrivals time, when the setting sun casts a favorable light on those pesky wrinkles and unsightly bulges.
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As light from the sun hits the sail, it imparts a minuscule but continuous acceleration.
The action of ultra-violet light from the sun on a molecule called 7-dehydrocholesterol, found in the skin, turns it into the vitamin.
Because the rims of these craters catch rays of light from the sun, this may provide sufficient illumination for the spectrometer to detect frozen water.
But astronomers have figured out a clever way for Hubble to "observe" the effects of the transit on the light from the sun: by looking at the moon.
And I think the sun shining outside and the light coming in I think typifies the excellent relationship that Ireland enjoys with the United States not only now, but as you say, over many generations.
You can choose different colors and mirrored or non-mirrored, but all are packaged with matched low and high VLT duos to cover sunny days, overcast days, and days when you get both sun and late day flat light.
"Imagine you are below the shark, the shark is swimming and you have the light from the Sun coming down, " explained Dr Julien Claes, a shark biologist from the Catholic University of Louvain in Belgium, and the lead author of the study.
Solar panels use light energy from the sun to generate electricity through the photovoltaic effect.
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The moon was rising over the mountains, aglow there opposite the lingering light of the setting sun.
So imagine if the shark can actually produce a light, which is identical to the light produced by the Sun.
The abundance of such compounds tells us that the sun grew up less than 1 light year away from a massive star that exploded.
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