目前日期文章:201411 (17)

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http://www.tinselandtimber.com/collections/apple-tv-tray/products/apple-tv-tray

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 MHP1000 Headphones


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http://www.newegg.com/Product/Product.aspx?Item=N82E16830173005&cm_re=Kodak_PIXPRO_SP360-_-30-173-005-_-Product&nm_mc=AFC-C8Junction&cm_mmc=AFC-C8Junction-_-na-_-na-_-na&cm_sp=&AID=10446076&PID=7186376&SID=skim54000X1299460Xc8a2f0280dd6dabd4004afe6de8b1390

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There's nothing better than waking up to the smell of freshly-cooked bacon. Now you can enjoy that experience every morning with Oscar Mayer Wake Up & Smell The Bacon. This simple device plugs into the bottom of your iPhone, and works in parallel with a specially-designed app to release the unmistakable scent of premium bacon at the selected time, making everyday — whether it's a work day or the weekend — a little bit easier to face.


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http://www.us.ricoh-imaging.com/qsystem/QS-1_Black

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Little things can do big ideas

http://lixpen.com 

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http://carbide3d.com

一堆尿尿3Dprinter中,我還是比較喜歡CNC。

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http://www.vr-gaming.co.uk/wp-content/uploads/2014/07/vrsfx-binaural-audio-lo.jpg?a39a65

 

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http://www.aersf.com/#


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https://www.kickstarter.com/projects/nomiku/nomiku-bring-sous-vide-into-your-kitchen?ref=nav_search

http://www.nomiku.com/product-info/

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screenshot_1425  


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 \frac{1}{f} = (n-1) \left[ \frac{1}{R_1} - \frac{1}{R_2} + \frac{(n-1)d}{n R_1 R_2} \right],

where

f is the focal length of the lens,
n is the refractive index of the lens material,
R_1 is the radius of curvature (with sign, see below) of the lens surface closest to the light source,
R_2 is the radius of curvature of the lens surface farthest from the light source, and
d is the thickness of the lens (the distance along the lens axis between the two surface vertices).

The focal length f is positive for converging lenses, and negative for diverging lenses. The reciprocal of the focal length, 1/f, is the optical power of the lens. If the focal length is in metres, this gives the optical power in dioptres (inverse metres).

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FOV = 2 * atan( A / 2f )    - or -

FOV = 2 * atan( A / 2f ) * 180 / pi

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