1.The formation mechanism of orange valvule-like pinhole in rolled aluminium foil was investigated by using optical microscopy,scanning electron microscopy,and energy dispersion X-ray spectrum.
8.Buildings that have a combination of copper and galvanized steel are susceptible to pinholes and corrosion caused by the mobility of ions in the water.
10.The American Astronomical Society also suggests watching the eclipse indirectly through a pinhole projector, or through binoculars or a telescope fitted with special solar filters.
12.Now your pinhole projector is ready, so you can head outside, make sure the sun is behind you, hold the projector up to your eye, and then look for sunlight to come into the projector.
13.He was probably familiar with the camera obscura, a device that projected an image through a pinhole and onto a screen in a darkened chamber (new research suggests he may have been introduced to it by the Jesuits of Delft).
14.And you can imagine the water drop, if it's like a balloon and you're trying to push it into those little 10,000 little pinholes, it doesn't like to do that 'cause it's gotta conform to all those pinholes.