The striking spiral effect was caused by frozen fuel released from the rocket’s upper stage, which caught sunlight at high altitude and produced the luminous display. Among those who recorded ...

Kunzite is a transparent gem-like crystal, and is one of the most beautiful examples of the fluorescent bodies at present available for demonstrating the luminous effects produced by the radium rays.

113, No. 780, February 2001 A Large Spectral Class Dependence of the... A Large Spectral Class Dependence of the Wilson‐Bappu Effect among Luminous Stars This is the metadata section. Skip to content ...