Linear Polarizer
April 14th, 2010
Please help with this physics problem involving polarization?
Unpolarized light travels through 2 linear polarizers. What (minimum) angle should the second polarizer be relative to the first polarizer (the difference between θ1 and θ2) so that the final intensity of light is 1/3 the original value?
the first filter blocks half the light only letting one plane through
the second one needs to be arranged so that it lets 2/3 of the remaining light through
(1/2 * 2/3 = 1/3)
the angle is such that sin(angle) = 2/3
arcsin (2/3) = 41.8 deg (this is 41.8 deg from perpendicular to the axis of the first filter)
let first filter be straight up and down, 90 deg,
then
θ1 – θ2 = 90 – 41.8 = 48.2 deg
maybe some of this makes a little sense
Linear Polarizer and LCD
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HOYA 49mm PL Linear Polarizer Filter for NIKON CANON PENTAX SONY MINOLTA OLYMPUS $14.99 |
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Cokin 160 Linear Polarizer (A160) Filter $5.00 |
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B+W 60mm Keasemann Linear Polarizer Filter $89.00 |
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Tiffen 72WPOL 72mm Warm Linear Polarizer Filter NEW $60.97 |
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55mm Screw-In Filter SEARS LINEAR POLARIZER – JAPAN $9.95 |
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46 mm SR Linear Polarizer Glass Filter NEW $10.97 |
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New Schneider 6″ 85 Linear True Polarizer Filter Tiffen $400.00 |
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New Schneider 127mm True-Polarizing Water White Linear Glass Filter Filters $500.00 |
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B+W POLARIZING FILTER – 58mm Top-Pol Linear – NIB $20.00 |
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B+W POLARIZING FILTER – 49mm Top-Pol Linear – NIB $15.00 |
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B+W POLARIZING FILTER – 52mm Top-Pol Linear – NIB $15.00 |
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Hoya B46PL 46mm Linear Polarizer Glass Filter NEW $23.97 |
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Hoya B55PL 55mm Linear Polarizer Glass Filter NEW $23.97 |
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Bower 37mm Glass Pro Linear Polarizer Filter enhances color Free World Ship $9.99 |
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MAXTEC 62mm Linear Polarizer Glass Filter Japan 11919 $29.95 |
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Telesor 62mm Linear Polarizer Glass Filter Japan 11911 $24.95 |
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Series VI/6 Vivitar Linear POLARIZER/POLARIZING Camera Lens Filter $19.99 |
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Tiffen 62mm Linear Polarizer Glass Filter USA 11909? $19.95 |
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Hoya B55PL 55mm Linear Polarizer Glass Filter NEW $23.97 |
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New 48mm Schneider Linear True-Polarizer Filter Rotating Tiffen Filters 48 mm $150.00 |
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Nikon 52mm Linear Polarizer Filter $17.95 |
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Tiffen 72mm Std Rotating LINEAR POLARIZER Filter $43.95 |
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Lenmar 55mm THIN Linear Polarizer -Made In Japan- New $7.74 |
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Star-D 55mm THIN Linear Polarizer -Made In Japan – New $7.55 |
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New Schneider 40.5mm One-Stop Linear True-Polarizing Filter Tiffen Filters $125.00 |
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B+W 67mm TOP LINEAR POLARIZER Filter 67 mm MRC Coated! $75.95 |
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STAR-D Skybolt 55mm LINEAR THIN POLARIZER FILTER- BRAND NEW 55 $0.99 |
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Promaster Spectrum 7 – 72mm P.L – Polarizing filter. Linear Excellent condition $21.90 |
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Top Brand FILP77 Linear Polarizing Filter 77mm NEW $34.95 |
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TIFFEN 62mm LINEAR POLARIZER FILTER $21.00 |
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Tiffen 72mm Linear Polarizing Filter $35.99 |
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HOYA 55MM LINEAR POLARIZER FILTER Japan $6.95 |
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25mm Polarizing Linear PL Filter for DSLR SLR Camera High Quality Optical glass $4.99 |
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27mm Polarizing Linear PL Filter for DSLR PENTAX K-01 with 40mm XS Optical glass $4.99 |
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28mm Polarizing Linear PL Filter for DSLR SLR Camera High Quality Optical glass $4.99 |
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Vintage Cenei Ceneipol 58mm Linear Polarizing Lens Filter $20.00 |
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52mm Std Rotating LINEAR POLARIZER Filter $18.99 |
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Hoya 95mm Linear Polarizer $47.99 |
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Leica (13359) E54 Linear Polarizing Filter – GORGEOUS – MUST HAVE $69.95 |
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New Schneider 102mm True-Polarizing Water White Linear Filter Tiffen Filters $300.00 |
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Hoya 62mm Skylight and 62mm Linear Polarizer Glass Filters – with cases $9.95 |
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Hoya 52mm UV and Hoya 52mm Linear Polarizer Filters $9.95 |
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30.5mm Polarizing Linear PL Filter for DSLR Camera High Quanlity Optical glass $4.99 |
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New Schneider 40.5mm Non-Rotating Linear True Polarizing Filter 40.5 mm Filters $135.00 |
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Schneider 40.5mm Non-Rotating Linear True Polarizing Filter 40.5 mm Filters $59.99 |
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Aroma Filter 82mm Linear Polarizing USED Camera $45.87 |
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86mm Polarizing Linear PL Filter for Sigma APO 150-500mm 50-500mm 170-500mm $7.99 |
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77mm Polarizing Linear PL Filter for Canon 24-70mm 17-40mm 70-200mm 24-105mm $5.99 |
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74mm Polarizing Linear PL Filter for DSLR SLR Camera High Quality Optical glass $5.99 |
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67mm Polarizing Linear PL Filter for Canon 18-135mm 70-200mm 17-85mm 70-300mm $5.99 |
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62mm Polarizing Linear PL Filter for Tamron 70-300mm 18-200mm 18-270mm 70-300mm $5.99 |
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55mm Polarizing Linear PL Lens Filter fr Sony with 55-200mm 18-70mm 18-55mm Lens $4.99 |
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52mm Polarizing Linear PL Lens Filter fr Nikon with 18-55mm 35mm 50mm 55-200mm $4.99 |
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49mm Polarizing Linear PL Lens Filter for FA 77mm f/1.8 DA 21mm f/3.2 AL DA 35mm $4.99 |
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46mm Polarizing Linear PL Lens Filter for Panasonic LUMIX DMC-GF2 with 14mm Lens $4.45 |
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43mm Polarizing Linear PL Lens Filter for Samsung NX11 NX200 with 16mm Lens $4.25 |
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40.5mm Polarizing Linear PL Lens Filter f Nikon J1 V1 with 10-30mm 30-110mm lens $4.25 |
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37mm Polarizing Linear PL Lens Filter For Olympus E-P3 with 14-42mm II 17mm $4.99 |
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One 72mm Tiffen Glass Polarizing Filter Used Exc to Exc+ Linear With Case $24.99 |
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2 55mm Hoya Glass Linear Polarizing Filters Used Exc+ With Cases $21.99 |
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Optex 52mm Linear Polarizing Filter $15.00 |
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55mm Linear Polarizer, brand new in box, Made in Japan $7.95 |
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Samigon POLARIZING LINEAR 77mm Filter Made in Japan $0.99 |
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Tiffen 62mm Linear Polarizer – Mint in hard Case $25.00 |
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New Schneider 4.5″ 81EF Linear True-Polarizing Filter $250.00 |
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New Schneider 4.5″ 85 Linear True-Polarizing Filter $250.00 |
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New Schneider 48mm Linear True-Polarizing Glass Filter $150.00 |
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New Schneider 48mm One-Stop Linear True-Polarizing Filter 48 mm Tiffen Filters $140.00 |
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55 Hoya 55mm True Linear Polarizer PL Filter Filtre JKC $15.50 |
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Sears 55mm Linear Polarizer $4.95 |
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Skybolt 49mm Linear Polarizer $5.95 |
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Nikon 52mm Linear Polarizer Glass Filter & Case 12354 $49.99 |
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MILO 55MM LINEAR POLARIZING FILTER MADE IN JAPAN ! $9.00 |
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VIVITAR 43mm POLARIZING FILTER – LINEAR MADE IN JAPAN ! $12.00 |
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One Pair of Digital Linear Polarizing 3D Glasses $2.31 |
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One Pair of Digital Linear Polarizing 3D Glasses $1.19 |
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58mm Tiffen Linear Polarizer Looks & Works Great $9.95 |
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Hama 49mm screw-in Linear Polarizing filter in rotating mount $15.72 |
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HOYA B-49PL 49MM LINEAR POLARIZER GLASS FILTER 49 $32.85 |
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HOYA B-58PL 58MM LINEAR POLARIZER GLASS FILTER 58 $35.85 |
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HOYA B-62PL 62MM LINEAR POLARIZER GLASS FILTER 62 $38.85 |
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HOYA B-46PL 46MM LINEAR POLARIZER GLASS FILTER 46 $32.85 |
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HOYA B-82PL 82MM LINEAR POLARIZER GLASS FILTER 82 $65.85 |
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HOYA B-55PL 55MM LINEAR POLARIZER GLASS FILTER 55 $19.35 |
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Cokin 62 mm Linear Polarizer Screw-In Filter Made in Japan $10.00 |
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TOYO OPTICS 55MM LINEAR POLARIZING CAMERA LENS FILTER $9.95 |
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SCHNEIDER SERIES 9 85 LINEAR TRUE-POL FILTER Polarizer $180.00 |
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ROMOR 67mm LINEAR POLARIZER FILTER- MADE IN JAPAN- New $17.94 |
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49mm Linear Polarizer Lens Filter for Sony NEX5N NEX-C3 18-55mm 16mm 24mm 18-200 $6.98 |
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55mm Linear Polarizer Filter 6655PL $3.00 |
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82mm Linear Polarizer Filter 6682PL $11.00 |
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Rollei Rolleipol 49mm Linear Polarizer Filter $45.95 |
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Tiffen 72mm linear polarizing filter. Excellent condtiion. No scratches on glass $24.99 |
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Hoya B46PL 46mm Linear Polarizer Glass Filter NEW $23.97 |
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Rokunar 55mm Linear Polarizer -Made In Japan- Brand New $6.45 |
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62mm Linear Polarizing Glass Filter POL Enhances Colors Free World Ship $16.99 |
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Hoya 58mm LINEAR Polarizer Standard Grade **AUTHORIZED HOYA USA DEALER** $35.85 |
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Hoya 55mm LINEAR Polarizer **AUTHORIZED HOYA USA DEALER** $32.85 |
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HCE 52mm Linear Polarizing PL Lens Filter Used $10.00 |
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Soligor 49mm Linear Polarizer in 1109 $6.95 |
