56.0 MB (10.4 MB compressed)
3588 x 5456 pixels
30.5 x 46.2 cm ⏐ 12.0 x 18.2 in (300dpi)
ER DEGGINGER / SCIENCE PHOTO LIBRARY ER DEGGINGER / SCIENCE PHOTO LIBRARY
Flame test for strontium. The colour of the flame is caused by electrons that have been excited to a higher energy state. When they relax they emit energy in the form of a characteristic wavelength of light. The colour of the flame is different for different elements and can be used to identify unknown substances.
Model release not required. Property release not required.