File:Cyclotron motion smaller view.jpg
Original file (1,383 × 1,749 pixels, file size: 167 KB, MIME type: image/jpeg)
Captions
Summary[edit]
DescriptionCyclotron motion smaller view.jpg |
Français : Un faisceau d'électrons défléchis par un champ magnétique forme un cercle par effet cyclotron. La lueur provient de l'excitation des atomes gazeux prisonniers de l'ampoule.
English: Beam of cathode rays (electrons) in a demonstration vacuum tube moving in a circle in a magnetic field (cyclotron motion). The electrons are produced by an electron gun at bottom, consisting of a hot cathode, a metal plate heated by a filament so it emits electrons, and a cylindrical metal anode at a high voltage which accelerates the electrons into a beam. The red circular Helmholtz coil partially visible behind the tube generates a horizontal magnetic field that exerts a Lorentz force on the electrons. The force on the electrons is perpendicular to their direction of motion, causing them to bend into a circular path. Cathode rays are normally invisible, but enough air has been left in the tube so that the air molecules glow pink from fluorescence when struck by the fast-moving electrons. |
Date | |
Source | File:Cyclotron_motion_wider_view.jpg |
Author | Sfu |
This is a cropped image of File:Cyclotron motion wider view.jpg. It only displays the bulb.
Licensing[edit]
- You are free:
- to share – to copy, distribute and transmit the work
- to remix – to adapt the work
- Under the following conditions:
- attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
- share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.
File history
Click on a date/time to view the file as it appeared at that time.
Date/Time | Thumbnail | Dimensions | User | Comment | |
---|---|---|---|---|---|
current | 18:58, 16 August 2012 | 1,383 × 1,749 (167 KB) | Cantons-de-l'Est (talk | contribs) |
You cannot overwrite this file.
File usage on Commons
There are no pages that use this file.
File usage on other wikis
The following other wikis use this file:
- Usage on de.wikipedia.org
- Usage on el.wikipedia.org
- Usage on en.wikipedia.org
- Usage on fi.wikipedia.org
- Usage on fr.wikipedia.org
- Usage on fr.wiktionary.org
- Usage on hi.wikipedia.org
- Usage on ja.wikipedia.org
- Usage on ml.wikipedia.org
- Usage on pa.wikipedia.org
- Usage on pl.wiktionary.org
- Usage on ro.wikipedia.org
- Usage on si.wikipedia.org
- Usage on sl.wikipedia.org
- Usage on sr.wikipedia.org
- Usage on tl.wikipedia.org
- Usage on tr.wikipedia.org
- Usage on uk.wikipedia.org
- Usage on zh.wikipedia.org
Metadata
This file contains additional information such as Exif metadata which may have been added by the digital camera, scanner, or software program used to create or digitize it. If the file has been modified from its original state, some details such as the timestamp may not fully reflect those of the original file. The timestamp is only as accurate as the clock in the camera, and it may be completely wrong.
Camera manufacturer | NIKON CORPORATION |
---|---|
Camera model | NIKON D40 |
Exposure time | 5/1 sec (5) |
F-number | f/4 |
ISO speed rating | 200 |
Date and time of data generation | 14:43, 20 November 2008 |
Lens focal length | 18 mm |
Orientation | Normal |
Horizontal resolution | 72 dpi |
Vertical resolution | 72 dpi |
Software used | GIMP 2.6.2 |
File change date and time | 23:21, 20 November 2008 |
Y and C positioning | Co-sited |
Exposure Program | Manual |
Exif version | 2.21 |
Date and time of digitizing | 14:43, 20 November 2008 |
Meaning of each component |
|
Image compression mode | 4 |
APEX exposure bias | −0.33333333333333 |
Maximum land aperture | 3.6 APEX (f/3.48) |
Metering mode | Pattern |
Light source | Unknown |
Flash | Flash did not fire |
DateTime subseconds | 90 |
DateTimeOriginal subseconds | 90 |
DateTimeDigitized subseconds | 90 |
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 | Manual exposure |
White balance | Auto white balance |
Digital zoom ratio | 1 |
Focal length in 35 mm film | 27 mm |
Scene capture type | Standard |
Scene control | None |
Contrast | Soft |
Saturation | Normal |
Sharpness | Normal |
Subject distance range | Unknown |