File:Plastic_Protractor_Polarized_05375.jpg
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DescriptionPlastic Protractor Polarized 05375.jpg |
English: Tension lines in plastic protractor seen under cross polarized light. 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 birefringence of the plastic layer shows colored fringes. Also called Photoelasticimetry or photoelasticity. Not seen does not mean No difference. Français : Lignes de tension dans un rapporteur en plastique vu sous une lumière polarisée. Lorsqu'elle traverse un matériau sous tension mécanique, les deux composantes de l'onde subissent un retard l'une par rapport à l'autre. Ce retard fait apparaitre en lumière blanche des irisations dans le matériau. Ce phénomène, nommé photoélasticité, est mesuré par photoélasticimétrie. |
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Date | (25 May 2004, according to Exif data) | ||||||||
Source | Self-photographed | ||||||||
Author | Nevit Dilmen | ||||||||
Permission (Reusing this file) |
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Assessment
|
Items portrayed in this file
depicts
0.0125 second
2.8
9.7 millimetre
100
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 10:54, 3 April 2008 | 2,048 × 1,536 (738 KB) | Nevit | {{Information |Description=Tension lines in plastic protractor seen under polarized light. |Source=self-made |Date=2004 |Author= Nevit |Permission= |other_versions= }} Category:Nevit Dilmen Category:Protractors |
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Camera manufacturer | SONY |
---|---|
Camera model | CYBERSHOT |
Exposure time | 1/80 sec (0.0125) |
F-number | f/2.8 |
ISO speed rating | 100 |
Date and time of data generation | 22:53, 25 May 2004 |
Lens focal length | 9.7 mm |
Orientation | Normal |
Horizontal resolution | 72 dpi |
Vertical resolution | 72 dpi |
Software used | Adobe Photoshop CS2 Windows |
File change date and time | 03:58, 3 April 2008 |
Y and C positioning | Co-sited |
Exposure Program | Normal program |
Exif version | 2.1 |
Date and time of digitizing | 22:53, 25 May 2004 |
Image compression mode | 2 |
Maximum land aperture | 2.0625 APEX (f/2.04) |
Metering mode | Pattern |
Light source | Unknown |
Flash | Flash did not fire |
Color space | sRGB |