Ныв:BiodegradablePlasticUtensils1.jpg
Сæрибар энциклопеди Википедийы æрмæг.
Size of this preview: 800 × 521 pixel
Image in higher resolution (2700 × 1757 pixel, file size: 1,96 МБ, MIME type: image/jpeg)
| Description |
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:
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.
|
|||
|---|---|---|---|---|
| Source |
United States Department of Agriculture (link) |
|||
| Date |
unknown |
|||
| Author |
Scott Bauer |
|||
| Permission |
|
|||
| Other versions |
Image:BiodegradablePlasticUtensils.jpg (original) |
 |
This is a featured picture on Wikimedia Commons. We believe it is one of the finest images on Commons. If you have an image of similar quality that can be published under a suitable copyright license, be sure to upload it, tag it, and nominate it. |
 |
This image was selected as a picture of the day for April 06, 2007. It was captioned as followed:
Česky: Jídelní příbory vyrobené z polymerních biodegradabilních materiálů
Suomi: Luonnossa hajoavasta materiaalista valmistettuja veitsiä, haarukoita ja lusikoita
Magyar : Evőeszközök biológiailag lebomló poliészterből
Nederlands: Messen, vorken en lepels gemaakt van een organisch zetmeel-polyestermateriaal. Foto gemaakt met de foto-elasticimetriemethode.
Русский: Ножи, вилки и ложки, изготовленные из разлагаемого микроорганизмами полиэстера на основе крахмала.
Slovenčina: Jedálne príbory vyrobené z polymérnych biodegradabilných materiálov
|
Ссылки
Ацы нывæй чи пайда кæны, ахæм статьятæ:
