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Tommy Lee

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Sir Humphry Davy

Born 17 Dec 1778; died 29 May 1829 at age 50. English chemist (Baronet), who discovered several chemical elements and compounds, invented the miner's safety lamp, and epitomized the scientific method. With appointment to the Pneumatic Institution to study the physiological effects of new gases, Davy inhaled gases (1800), such as nitrous oxide (laughing gas) and a nearly fatal inhalation of water gas, (a mixture of hydrogen and carbon monoxide). Davy discovered alkali metals: potassium and sodium, an isolation made with electric current for the first time (1807); as well as alkaline earth metals: calcium, strontium, barium, and magnesium (1808). He discovered boron at the same time as Gay-Lussac. He recognized chlorine as an element, which prior workers confused as a compound.

On the first day of school...

On the first day of school, Peter handed his new teacher a note from his mother. The teacher unsealed the note, read it, looked at Peter with a frown, and placed the note inside a desk drawer. “So what did she write?” Peter asked. “It’s a disclaimer.”
“A what?” “It says, ‘ The opinions expressed by Peter are not necessarily those of his mother or father,’”
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