jupitersterrain four

"Make a cross with two light strips of cedar, the arms so long as to reach the four corners of a large silk handkerchief when extended.  Tie the corners of the handkerchief to the extremities of the cross, so you have the body

Illustration demonstrating how to safely draw electricity from the kite string

of a kite which, being properly accommodated with a tail, loop and string, will rise in the air like those made of paper; but, this being made of silk, is better to bear the wet and wind of a thunder-gust without tearing.  To the top of the upright stick of the cross is to be fixed a very sharp-pointed wire, rising a foot or more above the wood.  In the end of the twine, next to the hand is to be held a silk ribbon, and where the silk and the twine join a key may be fastened.  This kite is to be raised when a thunder-gust appears to be coming on, and the person who holds the string must stand within a door or window, or under some cover, so that the silk ribbon may not be wet, and care must be taken that the twine does not touch the frame of the door or window.   As soon as any of the thunder clouds come over the kite, the pointed wire will draw the electrified fire from them

http://www.sparkmuseum.com/BOOK_FRANKLIN.HTM

1.02am, 19.10.12. 



An electric glow is a plasma formed by the passage of current at 100 V to several kV through a gas, often argon or another noble gas. It is found in products such as neon lamps and plasma-screen televisions, and is used in plasma physics and analytical chemistry

Whichever species (ions or atoms) strike, collisions within the electrode redistribute this energy until a portion  is ejected, typically in the form of free atoms. This process is known as spluttering. Once free, atoms move into the bulk of the glow emission through drift and due to the energy they gained from spluttering. The atoms can then be excited by collisions with ions, electrons, or other atoms that have been previously excited by collisions

Both radio-frequency and direct-current glow emission can be operated in pulsed mode. In atomic emission, analyte atoms emit during different portions of the pulse than background atoms 

As the voltage is increased above the normal glow range, abnormal glow begins. If the voltage is increased to the point the electrode glow covers the entire electrode arc emission begins. Depth analysis relies on tracking the signal in time, therefore, is the same as tracking the elemental composition in depth. Depth analysis requires greater control over operational parameters

Under the best conditions, depth resolution in the single nanometer range has been achieved (in fact, within-molecule resolution has been demonstrated). For direct current mode the electrode must be conductive.  The pressure and current may be held constant, while potential is allowed to vary. The pressure and voltage may be held constant while the current is allowed to vary. The power (product of voltage and current) may be held constant while the pressure is allowed to vary

Regions described as "glows" emit significant light; regions labeled as "dark spaces" do not. As the discharge becomes more extended (i.e., stretched horizontally in the geometry of the figure), the positive column may become striated. That is, alternating dark and bright regions may form. Compressing the discharge horizontally will result in fewer regions. The positive column will be compressed while the negative glow will remain the same size, and, with small enough gaps, the positive column will disappear altogether. In an analytical glow emission, it is primarily a negative glow with dark region above and below it

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