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by Science Source
$54.00
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You'll never run out of power again! If the battery on your smartphone or tablet is running low... no problem. Just plug your device into the USB port on the top of this portable battery charger, and then continue to use your device while it gets recharged.
With a recharge capacity of 5200 mAh, this charger will give you 1.5 full recharges of your smartphone or recharge your tablet to 50% capacity.
When the battery charger runs out of power, just plug it into the wall using the supplied cable (included), and it will recharge itself for your next use.
Design Details
Spectroscopic Apparatus, Steel engraving, 1869. In 1855 Robert Bunsen had created the Bunsen burner for use in flame tests of various metals and... more
Dimensions
1.80" W x 3.875" H x 0.90" D
Ships Within
1 - 2 business days
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Spectroscopic Apparatus, Steel engraving, 1869. In 1855 Robert Bunsen had created the Bunsen burner for use in flame tests of various metals and salts its non-luminous flame did not interfere with the colored flame given off by the test material. This line of work led to the spectroscope. It was Kirchhoff who suggested that similarly colored flames could possibly be differentiated by looking at their emission spectra through a prism. When he shone bright light through such flames, the dark lines in the absorption spectrum of the light corresponded in wavelengths, with the wavelengths of the bright, sharp lines characteristic of the emission spectra of the same test materials. A spectroscope is an instrument for producing and observing spectra. In the 1890's scientists began using spectroscopy for medical research and criminal investigations. The field of toxicology was the first to benefit. Late 19th-century forensic pathologists were enthusiastic about the potential uses of spectrosco...
$54.00
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