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COI synopsis: A cash box with an electronic lock which dyes its contents bright orange if opened illegally.
COI synopsis: Power to the disabled. Electricity takes this wheelchair up steep slopes, even up steps, all with the simplest of controls. Compared to conventional wheelchairs, this gives magic carpet mobility.
COI synopsis: Lipids are man’s way of muting the mosquito pupa’s breathing trumpets. Extracted from an ordinary hen’s egg, the lipids form a thin layer on the surface of the water, denying the pupae...
COI synopsis: Farmers cannot often make hay while the sun shines, and the hayfields themselves can often become junior jungles. New machinery gives the most obdurate hay the kindest cut of all, and reaps...
COI synopsis: A coal black product to give us clean, clear water. Anthracite coal is converted into "active carbon" whose particles have a vast porous surface. They literally "hang-on" to any impurities in...
COI synopsis: How does the flash in a flash bulb develop - and what happens to a bullet in flight? A mechanical camera filming ten thousand pictures per second and an electronic camera whose exposure is...
COI synopsis: The fire grate with the "fluidised bed". Small particles of solid fuel burning in a bath of sand made fluid by air form a bowl of liquid fire... a fire without waste or pollution.
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Learning on Screen
Related searches have been automatically generated using the OpenCalais semantic analysis service.
Related searches have been automatically generated using the OpenCalais semantic analysis service.