- Amicrometerisonethousandthofonemillimeter.Inanultracapacitor,thedistancebetweentheionsandopposite-chargedelectrodeissotinyit'smeasuredinnanometers(one-thousandthofamicron).Thesehigh-energygammarays,detectedbyFermi’sLargeAreaTelescope(LAT),havewavel...
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