File:Anatase_(titania,_TiO2)_photocatalyst_producing_hydrogen.jpg
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Summary
DescriptionAnatase (titania, TiO2) photocatalyst producing hydrogen.jpg |
English: In the reaction here, photons from the light source (which is just out of frame to the right of the picture) hit the surface of the titania disc, exciting electrons within the atomic structure These then react with the water molecules, splitting it into its constituents of hydrogen and oxygen. In this experiment, chemicals dissolved in the water prevent the formation of oxygen, which would otherwise recombine with the hydrogen. |
Date | |
Source | http://www.ucl.ac.uk/maps-faculty/potw/potw/potw1315 |
Author | University College London Faculty of Mathematical & Physical Sciences |
Camera location | 51° 31′ 29.24″ N, 0° 08′ 00.88″ W | View this and other nearby images on: OpenStreetMap | 51.524789; -0.133578 |
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Licensing
This file is licensed under the Creative Commons Attribution 3.0 Unported license.
Attribution: O. Usher (UCL MAPS)
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- to share – to copy, distribute and transmit the work
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Items portrayed in this file
depicts
51°31'29.240"N, 0°8'0.881"W
9 August 2013
image/jpeg
97cd23ee11a2d930c1e3cf5d7ec39e3779899c9c
6,930,080 byte
3,773 pixel
2,380 pixel
File history
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 15:56, 21 August 2013 | 2,380 × 3,773 (6.61 MB) | Uclmaps | User created page with UploadWizard |
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Metadata
This file contains additional information, probably added from the digital camera or scanner used to create or digitize it.
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Camera manufacturer | NIKON CORPORATION |
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Camera model | NIKON D3000 |
Exposure time | 1/500 sec (0.002) |
F-number | f/5.6 |
ISO speed rating | 400 |
Date and time of data generation | 14:26, 9 August 2013 |
Lens focal length | 52 mm |
Width | 2,592 px |
Height | 3,872 px |
Bits per component |
|
Pixel composition | RGB |
Orientation | Normal |
Number of components | 3 |
Horizontal resolution | 300 dpi |
Vertical resolution | 300 dpi |
Software used | Adobe Photoshop CS6 (Windows) |
File change date and time | 11:59, 12 August 2013 |
Y and C positioning | Co-sited |
Exposure Program | Aperture priority |
Exif version | 2.21 |
Date and time of digitizing | 14:26, 9 August 2013 |
Meaning of each component |
|
Image compression mode | 4 |
Shutter speed | 8.965784 |
APEX aperture | 4.970854 |
Exposure bias | 1 |
Maximum land aperture | 5 APEX (f/5.66) |
Metering mode | Pattern |
Light source | Unknown |
Flash | Flash did not fire |
DateTime subseconds | 50 |
DateTimeOriginal subseconds | 50 |
DateTimeDigitized subseconds | 50 |
Supported Flashpix version | 1 |
Color space | sRGB |
Sensing method | One-chip color area sensor |
File source | Digital still camera |
Scene type | A directly photographed image |
Custom image processing | Normal process |
Exposure mode | Auto exposure |
White balance | Auto white balance |
Digital zoom ratio | 1 |
Focal length in 35 mm film | 78 mm |
Scene capture type | Standard |
Scene control | Low gain up |
Contrast | Normal |
Saturation | Normal |
Sharpness | Normal |
Subject distance range | Unknown |
Serial number of camera | 7428935 |
Lens used | 18.0-55.0 mm f/3.5-5.6 |
Date metadata was last modified | 12:59, 12 August 2013 |
Unique ID of original document | CDFC11B4F7D884717FDF1F7413608AE0 |