Checked content

File:Firas spectrum.jpg

Refresh file.svg This file has been superseded by File:Cmbr.svg. It is recommended to use the other file. Please note that deleting superseded images requires consent.

new file
Gnome-x-office-drawing.svg File:Cmbr.svg is a vector version of this file.
It should be used in place of this raster image when superior.


File:Firas spectrum.jpg Gnome-go-next.svg File:Cmbr.svg

For more information about vector graphics, read about Commons transition to SVG.
There is also information about MediaWiki's support of SVG images.


New SVG image

Summary

Description The black body/ FIRAS spectrum of the cosmic microwave background radiation as imaged by the COBE satellite.
Date
Source NASA: http://lambda.gsfc.nasa.gov/product/cobe/cobe_image_table.cfm
Author NASA
Permission
( Reusing this file)

public domain

original caption "Cosmic Microwave Background (CMB) spectrum plotted in waves per centimeter vs. intensity. The solid curve shows the expected intensity from a single temperature blackbody spectrum, as predicted by the hot Big Bang theory. A blackbody is a hypothetical body that absorbs all electromagnetic radiation falling on it and reflects none whatsoever. The FIRAS data were taken at 34 positions equally spaced along this curve. The FIRAS data match the curve so exactly, with error uncertainties less than the width of the blackbody curve, that it is impossible to distinguish the data from the theoretical curve. These precise CMB measurements show that 99.97% of the radiant energy of the Universe was released within the first year after the Big Bang itself. All theories that attempt to explain the origin of large scale structure seen in the Universe today must now conform to the constraints imposed by these measurements. The results show that the radiation matches the predictions of the hot Big Bang theory to an extraordinary degree. See Mather et al. 1994, Astrophysical Journal, 420, 439, "Measurement of the Cosmic Microwave Background Spectrum by the COBE FIRAS Instrument,"Wright et al. 1994, Astrophysical Journal, 420, 450,"Interpretation of the COBE FIRAS CMBR Spectrum," and Fixsen et al. 1996, Astrophysical Journal, 473, 576,"The Cosmic Microwave Background Spectrum from the Full COBE FIRAS Data Sets" for details."

Licensing

Public domain This file is in the public domain because it was solely created by NASA. NASA copyright policy states that "NASA material is not protected by copyright unless noted". (See Template:PD-USGov, NASA copyright policy page or JPL Image Use Policy.)
NASA logo.svg
Dialog-warning.svg
Warnings:
  • Use of NASA logos, insignia and emblems are restricted per US law 14 CFR 1221.
  • The NASA website hosts a large number of images from the Soviet/ Russian space agency, and other non-American space agencies. These are not necessarily in the public domain.
  • Materials based on Hubble Space Telescope data may be copyrighted if they are not explicitly produced by the STScI. See also {{ PD-Hubble}} and {{ Cc-Hubble}}.
  • The SOHO (ESA & NASA) joint project implies that all materials created by its probe are copyrighted and require permission for commercial non-educational use.
  • Images featured on the Astronomy Picture of the Day (APOD) web site may be copyrighted.
The following pages on Schools Wikipedia link to this image (list may be incomplete):

Metadata

More information

SOS Childrens Villages has brought Wikipedia to the classroom. SOS Childrens Villages believes that a decent childhood is essential to a happy, healthy. Our community work brings families new opportunities through education, healthcare and all manner of support. Sponsoring a child is the coolest way to help.