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Flame Skimmer Libellula saturate
2013-07-18 10:48:37

The flame skimmer (Libellula saturate), also known as the firecracker skimmer, is a species of dragonfly that can be found in western areas of North America. It prefers to reside in warm areas near hot springs, ponds, and streams, but it can be seen backyards and public gardens. This species varies in size, but typically reaches a body length between two and three inches. Males are completely...

Bunsen Burner
2010-09-27 17:09:09

A Bunsen burner produces a single open gas flame; it is commonly found in labs - used for heating, sterilization, and combustion. Robert Bunsen, in 1852, was hired at the University of Heidelberg and promised a new laboratory building. Heidelberg had just started installing coal-gas street lighting which provided light but not necessarily heat. Laboratory lamps, at the time, left much to be...

Word of the Day
upstander
  • A person who stands up for something, as contrasted to a bystander who remains inactive.
  • One of the upright handlebars on a traditional Inuit sled.
The word 'upstander' in the first sense here is a play on the word 'bystander' and the idea of 'standing up' for something.