‘Negative resistance’ surprises material scientists
Deborah Chung and Shoukai Wang of the University of Buffalo in the US stumbled across this unexpected behaviour whilst researching ‘smart’ materials. These materials, usually based on carb...
Light makes insulator conduct
The researchers cooled the manganese oxide compound (Pr0.7Ca0.3MnO3) to below 200 K in a zero magnetic field. At this temperature the electrons drop into a low energy state, which minimizes their natu...
Hydrogen exonerated in Hindenburg crash
William Van Vorst of the University of California at Los Angles and Addison Bain, an independent consultant, have gathered evidence that hydrogen could not have caused the explosion. Film footage and ...
Tera-byte disk drives
The device works by storing the data as regions of electric charge. The charge is trapped within a thin dielectric layer coated onto a conducting platter. The hard drive reads and writes data using fi...
