File:Fenn ESI Instrument.jpg

Size of this preview: 626 × 599 pixels. Other resolution: 2,000 × 1,914 pixels.

Original file (2,000 × 1,914 pixels, file size: 2.35 MB, MIME type: image/jpeg)

Summary[edit]

Summary
Description	The single quadrupole mass spectrometer and ion source used for John Fenn's Nobel Prize winning discovery of electrospray ionization. This instrument is on display at the museum of the Science History Institute (formerly the Chemical Heritage Foundation) in Philadelphia, PA.
Source	Wikimedia Commons
Author	Jeff Dahl
Permission	See Commons

Creative Commons Attribution-ShareAlike 3.0 Unported (CC BY-SA 3.0)

This file is licensed under the Creative Commons Attribution-ShareAlike 3.0 license.

Official license: CC BY-SA 3.0

Original attribution and file history: Wikimedia Commons

Click on a date/time to view the file as it appeared at that time.

	Date/Time	Thumbnail	Dimensions	User	Comment
current	01:21, 2 June 2026		2,000 × 1,914 (2.35 MB)	Maintenance script (talk \| contribs)	== Summary == Importing file

You cannot overwrite this file.

The following 2 pages use this file:

This file contains additional information, probably added from the digital camera or scanner used to create or digitize it.

If the file has been modified from its original state, some details may not fully reflect the modified file.

Camera manufacturer	SONY
Camera model	DSLR-A100
Copyright holder	CC-BY-SA
Exposure time	1/30 sec (0.033333333333333)
F Number	f/3.5
ISO speed rating	400
Date and time of data generation	12:17, 31 May 2009
Lens focal length	30 mm
Label	Blue
Author	Jeff Dahl
Short title	Fenn ESI Instrument
Horizontal resolution	240 dpi
Vertical resolution	240 dpi
Software used	DSLR-A100 v1.04
File change date and time	11:28, 22 September 2009
Exposure Program	Aperture priority
Exif version	2.21
Date and time of digitizing	12:17, 31 May 2009
APEX shutter speed	4.906891
APEX aperture	3.61471
APEX brightness	1.62
APEX exposure bias	0
Maximum land aperture	1 APEX (f/1.41)
Metering mode	Pattern
Light source	Unknown
Flash	Flash did not fire, compulsory flash suppression
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	0
Focal length in 35 mm film	45 mm
Scene capture type	Standard
Scene control	Low gain up
Contrast	Normal
Saturation	Normal
Sharpness	Normal
Width	2,000 px
Height	1,914 px
Image height	1,914 px
Image width	2,000 px
Subject area	1,936 1,296 329 393
Copyright status	Copyrighted
Keywords	ESI Lab Mass Spectrometry
IIM version	2