We studied the small sample sets of 5 kinds of vinegar, by circumrotating evaporation and ultraviolet spectrum
scanning, under the conditions of wavelength at 245~330nm, dilution ratio of evaporated liquor at 1:6, evaporation temperature at 45[degrees] C, mass concentration of refernce at 45g/L.
* The highest-resolution ultraviolet spectrum
ever obtained of Earth's uppermost atmosphere, which extends beyond Columbia's orbit.
LRO's instruments will help scientists compile high resolution, three-dimensional maps of the lunar surface and also survey it in the far ultraviolet spectrum
An ultraviolet spectrum
obtained in 1993 by the Hubble Space Telescope shows unexpectedly strong absorptions near 2070 angstroms.
For three hours, they exposed the white cells and plasma (The clear portion of blood) to the long "A" wavelengths of the ultraviolet spectrum
, and then injected these treated components back into each volunteer.
By using Swift's Ultraviolet/Optical Telescope (UVOT), the astronomers were able to obtain an ultraviolet spectrum
of a GRB just 251 seconds after its onset, the earliest ever captured.
The details of the ultraviolet spectrum
suggest that the star had an episode of mass loss a long time ago.
It is so hot that its photosphere exhibits emission lines in the ultraviolet spectrum
, a phenomenon that has never been seen before.
Ground-based telescopes are valuable for testing the predictions, but they don't have enough spatial resolution to separate the star's own spectrum from the narrow-line gas blobs, and they can't see the critical ultraviolet spectrum
. Spot checks need to be made with HST, which has adequate spatial resolution and ultraviolet capability.
Photo: Ultraviolet spectrum
of the supernova.Two slanted bonds show how the spectrograph spreads out the ultraviolet light.
The high-resolution ultraviolet spectrum
was unlike any we had ever seen.