Lens Barrier
Water and Sunlight?
This might sound like a weird question, but… Serious answers only please, I’m trying to do research here. 
What would be the effect on sunlight if there was actually a barrier of water between you and the sun? Would there be more light (the water drops magnify the light like a lens) or would there be less light (the water diffuses the light)?
Sorry if this doesn’t sound very scientific; I’m no scientist, but am very curious about this.
Thank you very much!
As with other transmissive media, water will transmit some amount of the light, reflect some amount of the light, and abosrob some amount of the light.
As it turns out, water is mostly absorbing in the visible band, only certain wavelengths of blue-green light are partially transmitted. A sufficiently long cylinder of water will look blue because most of the other wavelengths are absorbed:
http://www.lsbu.ac.uk/water/vibrat.html#blue
Note that the absorption depth of water for non-blue is quite long, which is why a glass of water appears to be transparent. If you look carefully at the absorption curve, you can see that it takes about 100 m of water to completely absorb blue-green, while red requires only about 1 m to absorp. That’s why everything looks blue when you diving.
Thames Barrier Park – Lumix GH1
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BOSCH OLR94-3 LONG RANGE BARRIER LENS KIT 70FT X 7 FT) PACKS OF 3 $16.00 |
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CANON POWERSHOT SD750 FRONT LENS CLOSURE BARRIER PLATE $6.00 |
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CANON POWERSHOT SD1000 FRONT LENS CLOSURE BARRIER PLATE $6.00 |
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Maverick Guide to the Great Barrier Reef – Len Rutledge $26.27 |
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Canon SD1000 Front Lens Barrier Ring Repair Kit Silver $9.99 |
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Canon SD870 Front Lens Barrier Ring Repair Kit Silver $10.99 |
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Canon S400 Front Lens Barrier Ring Repair Kit Silver $9.99 |
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Lens Cover Barrier for Canon IXUS i 7 Zoom $17.37 |
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Lens Barrier Cover for Canon IXUS 960IS $25.28 |
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Canon A480 Front Lens Barrier Ring Repair Kit Silver $5.99 |
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CANON ELPH 2 FRONT LENS BARRIER 1 REPAIR PART $4.50 |
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CANON ELPH 2 FRONT LENS BARRIER 2 REPAIR PART $4.50 |
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CANON AUTOBOY BF 80 PRIMA BF TWIN DATE LENS BARRIER $1.50 |
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Canon SD750 Front Lens Barrier Ring Repair Kit Black $8.99 |
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CANON SD600 CAMERA LENS BARRIER REPAIR KIT PART $9.99 |
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Australia’s Great Barrier Reef by Len Zell $6.99 |
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Canon SD870 Front Lens Barrier Ring Repair Kit Silver $10.99 |
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CANON SD850 SD700 CAMERA LENS BARRIER REPAIR KIT PART $5.99 |
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Australia’s Great Barrier Reef (Lonely Planet Diving and Snorkeling Guides), Len $15.46 |
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DS BOSCH OMB77-3 BARRIER LENS $2.99 |
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MINOLTA VECTIS 20 FRONT COVER LENS BARRIER NEW AUTHENTIC ORIGINAL PART OEM $8.00 |
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DS BOSCH OMB93-3 BARRiER LENS F 935Z/934 (PK3) $1.99 |
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OEM New Canon Powershot SD750 SD1000 Front Lens Closure Barrier Plate Part $4.99 |
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Maverick Guide to the Great Barrier Reef Book | Len Rutledge NEW PB 1565541936 $20.60 |
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CANON POWERSHOT S90 LENS CLOSURE BARRIER PLATE NEW AUTHENTIC ORIGINAL PART OEM $4.40 |
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CANON S90 FRONT LENS BARRIER COVER PLATE NEW AUTHENTIC ORIGINAL REPAIR PART OEM $4.70 |
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@ USED GENUINE Olympus C-50 camera LENS BARRIER parts $17.95 |
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Canon PowerShot SD780 IS Lens Barrier Assy – Free Ship $18.91 |
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@ Olympus STYLUS 850 SW CAMERA LENS BARRIER parts $8.99 |
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Canon SD630 Front Lens Barrier Ring Repair Kit Silver $12.99 |
