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File:Hafnium lump thin film effects.jpg

Summary

Description
English: Upper side of a lump of highly pure hafnium used for evaporating as HfO2 onto glass along with silica to form multi layer dielectric optics. The vibrant colors seen here are a result of the lump being exposed to air (oxygen) while it was still hot after being used in an evaporating chamber where it is melted and vaporized using high intensity electron beams. The oxidized upper surface of the lump formed layers of differing thickness which interact with ambient light via bragg diffraction to form rich saturated colors in reflection.
Date 24 December 2006 (original upload date)
Source Transferred from en.wikipedia; transferred to Commons by User:Zscout370 using CommonsHelper.
Author Original uploader was Deglr6328 at en.wikipedia
Permission
( Reusing this file)

CC-BY-SA-3.0-MIGRATED; Released under the GNU Free Documentation License.

Licensing

Deglr6328 at the English language Wikipedia, the copyright holder of this work, hereby publishes it under the following license:
GNU head Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts.
Subject to disclaimers.
w:en:Creative Commons
attribution share alike		 This file is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported license. Subject to disclaimers.
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 attribute the work in the manner specified by the author or licensor (but not in any way that suggests that they endorse you or your use of the work).
  • share alike – If you alter, transform, or build upon this work, you may distribute the resulting work only under the same or similar license to this one.
This licensing tag was added to this file as part of the GFDL licensing update.
The following pages on Schools Wikipedia link to this image (list may be incomplete):

Metadata

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 NIKON
Camera model E5400
Exposure time 10/39 sec (0.25641025641026)
F-number f/2.8
ISO speed rating 59
Date and time of data generation 03:51, 10 December 2006
Lens focal length 5.8 mm
Orientation Normal
Horizontal resolution 300 dpi
Vertical resolution 300 dpi
Software used E5400v1.3
File change date and time 03:51, 10 December 2006
Y and C positioning Co-sited
Exposure Program Normal program
Exif version 2.2
Date and time of digitizing 03:51, 10 December 2006
Image compression mode 4
Exposure bias 0
Maximum land aperture 3 APEX (f/2.83)
Metering mode Pattern
Light source Unknown
Flash Flash did not fire, compulsory flash suppression
Colour space sRGB
Custom image processing Normal process
Exposure mode Auto exposure
White balance Auto white balance
Digital zoom ratio 0
Focal length in 35 mm film 28 mm
Scene capture type Standard
Contrast Normal
Saturation Normal
Sharpness Normal
Subject distance range Unknown

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