File:The First Transistor ever made, built in 1947 - Bell Labs.jpg
Original file (2,048 × 1,535 pixels, file size: 899 KB, MIME type: image/jpeg)
Captions
Summary
editDescriptionThe First Transistor ever made, built in 1947 - Bell Labs.jpg | The first transistor |
Date | |
Source | Bell Labs 004 |
Author | Windell Oskay from Sunnyvale, CA, USA |
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.
This image was originally posted to Flickr by oskay at https://www.flickr.com/photos/17425845@N00/8049353271. It was reviewed on 23 February 2013 by FlickreviewR and was confirmed to be licensed under the terms of the cc-by-2.0. |
23 February 2013
Annotations InfoField | This image is annotated: View the annotations at Commons |
English: The point-contact transistor effect takes place in the germanium surface below the triangle tip. One wire connect to the germanium plate. (Base) Two other wires connect via the triangle to two closely spaced narrow gold foils (<0.1mm at surface at the lower tip) to the germanium surface. (Emitter and Collector)
File history
Click on a date/time to view the file as it appeared at that time.
Date/Time | Thumbnail | Dimensions | User | Comment | |
---|---|---|---|---|---|
current | 15:22, 23 February 2013 | 2,048 × 1,535 (899 KB) | Jacopo Werther (talk | contribs) | {{Information |Description=The first transistor |Source=[http://www.flickr.com/photos/oskay/8049353271/ Bell Labs 004] |Date=2012-10-01 08:20 |Author=[http://www.flickr.com/people/17425845@N00 Windell Oskay] from Sunnyvale, CA, USA |Permission= |other_... |
You cannot overwrite this file.
File usage on Commons
There are no pages that use this file.
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 | Canon |
---|---|
Camera model | Canon PowerShot SD1100 IS |
Exposure time | 1/125 sec (0.008) |
F-number | f/4.9 |
ISO speed rating | 200 |
Date and time of data generation | 08:20, 1 October 2012 |
Lens focal length | 18.6 mm |
Orientation | Normal |
Horizontal resolution | 72 dpi |
Vertical resolution | 72 dpi |
Software used | Aperture 3.3.2 |
File change date and time | 08:20, 1 October 2012 |
Exif version | 2.2 |
Date and time of digitizing | 08:20, 1 October 2012 |
Meaning of each component |
|
Image compression mode | 5 |
APEX shutter speed | 6.96875 |
APEX aperture | 4.59375 |
APEX exposure bias | 0 |
Maximum land aperture | 4.59375 APEX (f/4.91) |
Metering mode | Pattern |
Flash | Flash did not fire, auto mode |
Supported Flashpix version | 1 |
Color space | sRGB |
Focal plane X resolution | 14,506.666666667 |
Focal plane Y resolution | 14,485.208333333 |
Focal plane resolution unit | inches |
Sensing method | One-chip color area sensor |
File source | Digital still camera |
Custom image processing | Normal process |
Exposure mode | Auto exposure |
White balance | Auto white balance |
Digital zoom ratio | 1 |
Scene capture type | Standard |
Lens used | 6.2-18.6 mm |