Flexible Joint Tripod
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 Blue Gorilla Pod Camera Tripod Stand Flexible Octopus Bubble Joint Flexible $7.83 Time Remaining: 18d 8h 4m Buy It Now for only: $7.83 |
 Green Gorilla Pod Camera Tripod Stand Flexible Octopus Bubble Joint Flexible $7.83 Time Remaining: 18d 9h 49m Buy It Now for only: $7.83 |
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Joby GP1-A1EN Gorillapod Flexible Tripod (Grey and Black) List Price: $19.95 Sale Price: $12.48 Used From: $6.00  |
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The Joby Gorillapod makes taking digital photos more fun than ever. Designed with self-timer photography in mind, the Gorillapod lets you mount your camera just about anywhere you want so that you can include everyone in your automatic shots... |
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3 Piece Best Value Tripod Package for the Nikon 1 V1, J1, D200 D100 D3100 D5100 D70s D70 D50, D5000 D3000 D300s D300 D200, D100 D1x D2h D1h D200 D70s D80, D100 D700 D90 Kit Includes 1 Professional 75 Inch Tripod with Carrying Case, 1 Professional 67 Inch Monopod, 1 Extra Flexible Double Joint Gripster Tripod Sale Price: $59.89 |
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1) 67" Professional Heavy Duty Monopod Camera Types:Digital, Film, Video Maximum Height:67.1 inches Minimum Height: 21.5 inches Foot Type: Rubber / Retractable Metal Spike Maximum Load Capacity:32.4 Ibs Includes:Carrying Case with Strap 2) 75" Professional Photo / Video Tripod Perfect for field, studio, educational or industrial applications Handles mini-DVs and all video cameras weighing up to 10 lbs leg section for extra stability Self-locking gear mechanism provides precise, silky smooth, "No-Drift" elevation adjustment Center brace with lock adds more stability Self-aligning metal quick-flip leg locks offer fast set up Non-skid rubber feet grab any surface Maximum Height: 75" Minimum Height: 28... |
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VidPro Gripster Flexible Compact Camera Tripod Sale Price: $2.95 Used From: $5.50 |
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Great photo opportunities are everywhere, but acceptable shooting locations are usually pretty rare, particularly outdoors. Thankfully, VidPro has created a compact, innovative tripod that can be placed almost anywhere, making it the perfect accessory for the photographer on the go... |
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Joby GP3 Gorillapod SLR-Zoom Flexible Tripod + BH1 Ball Head with Bubble Level List Price: $89.95 Sale Price: $60.99 |
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The BH1 Ballhead is designed to work with the popular Gorillapod SLR-ZOOM model, the ball head affords users the ability to easily tilt and rotate their cameras, while the Gorillapod provides unwavering support on almost any surface... |
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.. Flexible Gripster Camera Tripod For The Sony Bloggie Touch MHS-TS20, TS10 Camcorders List Price: $14.99 Sale Price: $9.99 |
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When your digital camera needs support for unique photo shoots, an ordinary tripod might not be able to tackle the job. The Gripster is the lightest and most versatile camera tripod available today. Featuring over two dozen flexible leg joints that bend and rotate, the Gripster will firmly secure your compact digital camera to virtually any surface ? anywhere and everywhere! Gripster is the ideal camera accessory for photographers on the go... |
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Joby GM2 Gorillamobile Flexible Tripod (Includes iPhone 3G/3GS Case and Universal Camera Adapter) List Price: $44.95 Sale Price: $13.00 Used From: $10.67 |
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Joby GM2-01EN Gorillamobile Flexible Tripod for iPhone 3G or 3Gs |
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Studiohut Flexible Compact Camera Tripod for Digital SLR Cameras & Camcorders List Price: $24.99 Sale Price: $12.50 |
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The flexible tripod lets you mount your camera or video camera just about anywhere you want so that you can increase your creative options. Bend, twist and shape to mount to just about anything providing the photographer with many unique perspective options... |
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3 Piece Best Value Tripod Package For The Canon EOS Rebel T3I T2I T1I 550D 350D 1000D 400D 60D 5D 30D 40D 10D 20D 5D 7D 450D XSI XS XTI T2I T1I EOS Gii K2 Ti 2000 1Ds Mark III MARK II 1D MARK IV XSI XS XTI Kit Includes 1 professional 75 Inch Tripod With Carrying Case, 1 Professional 67 Inch Monopod, 1 Extra Flexible Double Joint Gripster Tripod Sale Price: $54.89 |
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1) 67" Professional Heavy Duty Monopod Camera Types:Digital, Film, Video Maximum Height:67.1 inches Minimum Height: 21.5 inches Foot Type: Rubber / Retractable Metal Spike Maximum Load Capacity:32.4 Ibs Includes:Carrying Case with Strap 2) 75" Professional Photo / Video Tripod Perfect for field, studio, educational or industrial applications Handles mini-DVs and all video cameras weighing up to 10 lbs leg section for extra stability Self-locking gear mechanism provides precise, silky smooth, "No-Drift" elevation adjustment Center brace with lock adds more stability Self-aligning metal quick-flip leg locks offer fast set up Non-skid rubber feet grab any surface Maximum Height: 75" Minimum Height: 28... |
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3 Piece Best Value Tripod Package For The Olympus E-P2 Pen, Olympus Pen E-PL1, SP-570, C-5060, C-7070 SP-600UZ, SP-800UZ, E-3 SLR, E-30 E-450 E-420 E-620 E-610 E-600 E-380 E-10 E-20N E-3 E-2 E-1 E-330 E-300 E-520 E-500 E-410 E-510 Kit Includes 1 professional 75 Inch Tripod With Carrying Case, 1 Professional 67 Inch Monopod, 1 Extra Flexible Double Joint Gripster Tripod Sale Price: $49.89 |
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1) 67" Professional Heavy Duty Monopod Camera Types:Digital, Film, Video Maximum Height:67.1 inches Minimum Height: 21.5 inches Foot Type: Rubber / Retractable Metal Spike Maximum Load Capacity:32.4 Ibs Includes:Carrying Case with Strap 2) 75" Professional Photo / Video Tripod Perfect for field, studio, educational or industrial applications Handles mini-DVs and all video cameras weighing up to 10 lbs leg section for extra stability Self-locking gear mechanism provides precise, silky smooth, "No-Drift" elevation adjustment Center brace with lock adds more stability Self-aligning metal quick-flip leg locks offer fast set up Non-skid rubber feet grab any surface Maximum Height: 75" Minimum Height: 28... |
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3 Piece Best Value Tripod Package For The Sony CYBER-SHOT DSC-V3 F717 F707 V1 W1 W5 W7, F505 Kit Includes 1 professional 75 Inch Tripod With Carrying Case, 1 Professional 67 Inch Monopod, 1 Extra Flexible Double Joint Gripster Tripod Sale Price: $49.89 |
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1) 67" Professional Heavy Duty Monopod Camera Types:Digital, Film, Video Maximum Height:67.1 inches Minimum Height: 21.5 inches Foot Type: Rubber / Retractable Metal Spike Maximum Load Capacity:32.4 Ibs Includes:Carrying Case with Strap 2) 75" Professional Photo / Video Tripod Perfect for field, studio, educational or industrial applications Handles mini-DVs and all video cameras weighing up to 10 lbs leg section for extra stability Self-locking gear mechanism provides precise, silky smooth, "No-Drift" elevation adjustment Center brace with lock adds more stability Self-aligning metal quick-flip leg locks offer fast set up Non-skid rubber feet grab any surface Maximum Height: 75" Minimum Height: 28... |
Flexible planar frame is made of 7 rigid rods, connected at their ends by bearings?
http://alexandersemenov.tripod.com/ya/vrtr/index.htm
The frame can slide on the flat top of the desk.
Two red rods of length 30 can revolve around fixed point A and one green rod of lenght 2 can revolve around fixed pont B, |AB| = 34.
The lenght of four blue rods is 18 each.
What is the area of the loop made by joint C, after green rod completes one revolution?
This is a Peaucellier linkage, which has the property of inversion, which means C traces out another circle. What's the diameter? Well, we fiddle through some Pythagorean math. Let x = 1/2 of the distance between the ends of the 2 red rods. Then we find out what x is when the end of the linkage is at 32 and at 36 from A. We plug it back into some more equations to find the min/max distances from A to C, which comes out to 16 and 18. The difference is the diameter of the circle traced out by C, and the area is just π.
Addendum: Nice work, Dr D.
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