carbonized cathode
1Vacuum tube — This article is about the electronic device. For experiments in an evacuated pipe, see free fall. For the transport system, see pneumatic tube. Modern vacuum tubes, mostly miniature style In electronics, a vacuum tube, electron tube (in North… …
2chemical industry — Introduction complex of processes, operations, and organizations engaged in the manufacture of chemicals and their derivatives. Although the chemical industry may be described simply as the industry that uses chemistry and… …
3Lithium iron phosphate battery — The lithium iron phosphate (LiFePO4) battery (also designated LFP ) is a type of rechargeable battery, specifically a lithium ion battery, which uses LiFePO4 as a cathode material.LiFePO4 cells have higher discharge current, very fast charge… …
4Joseph Swan — Infobox Scientist name = Joseph Wilson Swan box width = image size =200px caption =Photograph of Swan, c.1900 birth date = Birth date|1828|10|31 birth place = Bishopwearmouth, England death date = Death date and age|1914|5|27|1828|10|31 death… …
