File:Linear induction flashlight.jpg
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Original file (2,298 × 924 pixels, file size: 494 KB, MIME type: image/jpeg)
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Summary
DescriptionLinear induction flashlight.jpg |
English: A linear induction or "shaking" flashlight, powered by muscle power so it doesn't require batteries. It contains a linear electric generator which generates electric current when the flashlight is shaken lengthwise. The current charges a batterylike "ultracapacitor", which provides energy to power the LED lamp bulb. The linear generator consists of a coil of wire (visible in center of tube) and a cylindrical neodymium magnet (to right of coil) which slides in a tube through the center of the coil when the flashlight is shaken. Its magnetic field induces current in the coil by electromagnetic induction when it slides through. 10 seconds of shaking provides about 2 to 3 minutes of light. |
Date | |
Source | Own work |
Author | Chetvorno |
Licensing
I, the copyright holder of this work, hereby publish it under the following license:
This file is made available under the Creative Commons CC0 1.0 Universal Public Domain Dedication. | |
The person who associated a work with this deed has dedicated the work to the public domain by waiving all of their rights to the work worldwide under copyright law, including all related and neighboring rights, to the extent allowed by law. You can copy, modify, distribute and perform the work, even for commercial purposes, all without asking permission.
http://creativecommons.org/publicdomain/zero/1.0/deed.enCC0Creative Commons Zero, Public Domain Dedicationfalsefalse |
Annotations InfoField | This image is annotated: View the annotations at Commons |
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English: Coil of wire generates current when magnet slides through it
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English: Neodymium magnet in plastic tube slides back and forth through coil when flashlight is shaken
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English: Switch and ultracapacitor which stores current from coil are in this section
Items portrayed in this file
depicts
28 January 2012
File history
Click on a date/time to view the file as it appeared at that time.
Date/Time | Dimensions | User | Comment | |
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current | 17:23, 28 January 2012 | 2,298 × 924 (494 KB) | Chetvorno |
File usage
The following 2 pages use this file:
Metadata
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If the file has been modified from its original state, some details may not fully reflect the modified file.
Camera manufacturer | FUJIFILM |
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Camera model | FinePix E550 |
Exposure time | 1/60 sec (0.016666666666667) |
F Number | f/8 |
ISO speed rating | 400 |
Date and time of data generation | 12:16, 28 January 2012 |
Lens focal length | 7.2 mm |
Orientation | Normal |
Horizontal resolution | 72 dpi |
Vertical resolution | 72 dpi |
Software used | GIMP 2.6.11 |
File change date and time | 15:51, 28 January 2012 |
Y and C positioning | Co-sited |
Exposure Program | Normal program |
Exif version | 2.2 |
Date and time of digitizing | 12:16, 28 January 2012 |
Meaning of each component |
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Image compression mode | 2 |
APEX shutter speed | 6 |
APEX aperture | 6 |
APEX brightness | 3.78 |
APEX exposure bias | 0 |
Maximum land aperture | 3 APEX (f/2.83) |
Metering mode | Pattern |
Light source | Unknown |
Flash | Flash fired, auto mode |
Supported Flashpix version | 1 |
Color space | sRGB |
Focal plane X resolution | 5,292 |
Focal plane Y resolution | 5,292 |
Focal plane resolution unit | 3 |
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 |
Scene capture type | Standard |
Sharpness | Normal |
Subject distance range | Unknown |