Search results
Results from the WOW.Com Content Network
An atomic battery, nuclear battery, radioisotope battery or radioisotope generator uses energy from the decay of a radioactive isotope to generate electricity. Like a nuclear reactor , it generates electricity from nuclear energy, but it differs by not using a chain reaction .
This is a list of unsolved problems in chemistry. Problems in chemistry are considered unsolved when an expert in the field considers it unsolved or when several experts in the field disagree about a solution to a problem.
RNA folding problem: Is it possible to accurately predict the secondary, tertiary and quaternary structure of a polyribonucleic acid sequence based on its sequence and environment? Protein design : Is it possible to design highly active enzymes de novo for any desired reaction?
Like any battery, bio-batteries consist of an anode, cathode, separator, and electrolyte with each component layered on top of another. Anodes and cathodes are the positive and negative areas on a battery that allow electrons to flow in and out. The anode is located at the top of the battery and the cathode is located at the bottom of the battery.
A betavoltaic device (betavoltaic cell or betavoltaic battery) is a type of nuclear battery that generates electric current from beta particles emitted from a radioactive source, using semiconductor junctions. A common source used is the hydrogen isotope tritium.
The chemistry of this plutonium is different from that of the metal oxides formed from nuclear bomb detonations. One example of a site where plutonium entered the soil is Rocky Flats where in the recent past XANES ( X-ray spectroscopy ) has been used to determine the chemical nature of the plutonium in the soil . [ 21 ]
Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!
A secondary cell produces current by reversible chemical reactions (ex. lead-acid battery car battery) and is rechargeable. [citation needed] Lead-acid batteries are used in an automobile to start an engine and to operate the car's electrical accessories when the engine is not running. The alternator, once the car is running, recharges the battery.