Talaksan:BiodegradablePlasticUtensils1.jpg

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Buod

Paglalarawan
English: Knives, forks, and spoons made from a biodegradable starch-polyester material.

The photo has been realized using the photoelasticity method, an experimental method which gets a fairly accurate picture of stress distribution even around abrupt discontinuities in a material.

When a ray of plane polarised light is passed through a photoelastic material, it gets resolved along the two principal stress directions and each of these components experiences different refractive indices. The difference in the refractive indices leads to a relative phase retardation between the two component waves.

The setup used to photograph this photo was probably composed of:

  • A regular light source, with a quarter-wave plate installed to polarize the emerging light
  • A regular photo camera, with a quarter-wave plate installed in front of the lens

Light and camera being installed and oriented in the same direction, the two

quarter-wave plates were turned with the polarizing axis in the same direction.
Français : Couteaux, fourchettes et cuillères biodégradables en polyester à base d'amidon.
Português: Facas, garfos e colheres fabricadas com um material poliéster biodegradável à base de amido. A foto foi tirada usando o método fotoelástico, um método experimental que fornece uma imagem bastante precisa da distribuição do stress mesmo que o material possua descontinuidades abruptas.
Tiếng Việt: Dao, nĩa, muỗng được làm từ một loại vật liệu bột sợi tổng hợp có khả năng phân huỷ sinh học.
Petsa Hindi alam na araw
Unknown date
Pinanggalingan

United States Department of Agriculture (link)
noise removed with a Gaussian blur in The GIMP

This image was released by the Agricultural Research Service, the research agency of the United States Department of Agriculture, with the ID k7245-1 (next).

This tag does not indicate the copyright status of the attached work. A normal copyright tag is still required. See Commons:Licensing.


العربية | English | français | македонски | +/−

May-akda Scott Bauer
Permiso
(Muling paggamit sa file)
Public domain
This image or file is a work of a United States Department of Agriculture employee, taken or made as part of that person's official duties. As a work of the U.S. federal government, the image is in the public domain.

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Assessment

Larawan of the year
Larawan of the year
Featured Larawan

Wikimedia CommonsWikipedia

Ang talaksang ito ay a candidate sa Larawang ng Taon 2007.
Ito ay isang tampok na larawan sa Wikimedia Commons (Featured pictures) at kasalukuyang tinuring na isa sa mga pinakamagagandang larawan.
 Sa aspetong panumbasan na 8:5, 16:10, o 16:9, nababagay ang larawang ito bilang isang widescreen computer wallpaper (tingnan ang gallery).

 Ito ay isang tampok na larawan sa Wikipedia sa wikang Turkish (Seçkin resimler) at kasalukuyang tinuring na isa sa mga pinakamagagandang larawan.

Kung mayroong kang larawang mayroong parehong kalidad na maaaring ilimbag sa ilalim ng nararapat na lisensyang pangkarapatang-sipi, tiyaking kargahin iyon, i-tag iyon, at bigyang-nominasyon iyon.

This image was selected as picture of the day on Vietnamese Wikipedia.

Captions

Add a one-line explanation of what this file represents
Knives, forks, and spoons made from a biodegradable starch-polyester material.

Items portrayed in this file

depicts English

MIME type English

image/jpeg

checksum English

c0d5eaf9ea4bacc5e6cbcf72cf44a71b96a9f3d4

data size English

572,440 byte

height English

1,757 pixel

width English

2,700 pixel

Nakaraan ng file

Pindutin ang araw/oras upang makita kung papaano ang itsura ng talaksan noong oras na iyon.

Araw/OrasThumbnailMga dimensiyontagagamitKumento
ngayon21:51, 22 Abril 2007Thumbnail para sa bersyon noong 21:51, 22 Abril 20072,700 × 1,757 (559 KB)17Drew~commonswikidarkened background
18:14, 14 Pebrero 2007Thumbnail para sa bersyon noong 18:14, 14 Pebrero 20072,700 × 1,757 (1.96 MB)17Drew~commonswiki{{Information |Description=knives, forks, and spoons made from a biodegradable starch-polyester material |Source=United States Department of Agriculture ([http://www.ars.usda.gov/is/graphics/photos/k7245-1.htm link])<br>noise removed with a Gaussian blur

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