Spy glasses are precisely the device you want. They look harmless, like your regular spectacles, but built into the frames is a video recorder that can capture significant footage. This capability gives you a reliable recording device under the guise...…
Opal: opal is made by separating SiO2 from an aqueous solution and dehydrating colloid, so it is amorphous and has high water content (up to 10%). In the thin section, opal is colorless and transparent, with increased negative projections. Due to the...…
Iron Oxide can affect you when breathed in. Exposure to Iron Oxide fumes can cause metal fume fever. This is a flu-like illness with symptoms of metallic taste, fever and chills, aches, chest tightness and cough. * Prolonged or repeated contact can d...…
With the integration of Internet infrastructure in the hands of a few large companies, decentralization has become critical. In this way, companies have the responsibility to become good stewards of the Internet. When many users begin to wo…
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