ಚಿತ್ರ:BiodegradablePlasticUtensils2.jpg

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ವಿಕಿಪೀಡಿಯದಿಂದ, ಇದು ಮುಕ್ತ ಹಾಗೂ ಸ್ವತಂತ್ರ ವಿಶ್ವಕೋಶ

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ವಿವರ

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.
ದಿನಾಂಕ ದಿನಾಂಕ ತಿಳಿದಿಲ್ಲ
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ಆಕರ
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.

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ಕರ್ತೃ Scott Bauer
ಅನುಮತಿ
(ಈ ಕಡತವನ್ನು ಮರುಬಳಕೆ ಮಾಡಲಾಗುತ್ತಿದೆ)
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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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ಕಡತದ ಇತಿಹಾಸ

ದಿನ/ಕಾಲ ಒತ್ತಿದರೆ ಆ ಸಮಯದಲ್ಲಿ ಈ ಕಡತದ ವಸ್ತುಸ್ಥಿತಿ ತೋರುತ್ತದೆ.

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ಮೂಲಪ್ರತಿಯಿಂದ ಈ ಫೈಲು ಮಾರ್ಪಾಟಾಗಿದ್ದಲ್ಲಿ, ಈ ಮಾಹಿತಿ ಮಾರ್ಪಟ್ಟ ಫೈಲಿನ ವಿವರಗಳಿಗೆ ಸರಿಯಾಗಿ ಹೊಂದದೆ ಇರಬಹುದು.

"https://kn.wikipedia.org/wiki/ಚಿತ್ರ:BiodegradablePlasticUtensils2.jpg" ಇಂದ ಪಡೆಯಲ್ಪಟ್ಟಿದೆ