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A partnership between NASA and the U.S. Naval Academy is offering students the chance to build a satellite called "MidSTAR-2" through a U.S. Department of Defense program that will carry four experiments into space in 2011 to look at different parts of Earth's atmosphere, gamma rays, and solar winds. Scientists at NASA's Goddard...

Beneath the waves near Key Largo, FL, an underwater lab called Aquarius provides a safe harbor for scientists to live and work for weeks at a time. For NASA, Aquarius provides an environment that is analogous to the International Space Station (ISS) and the space shuttle. To maintain Aquarius, NASA recruited Invocon of Conroe, TX, to...

The Magtorque sensor provides a simple, low-cost means to monitor torque on rotating elements. It uses a small and magnetoelastic sensor attached to the shaft that is monitored remotely via an inductive pickup. It provides sensitive and repeatable measurements of applied torque without direct physical contact. More...

The Department of Homeland Security (DHS) is researching the use of cell phones equipped with sensors that could detect biological agents such as anthrax, as well as radioactive isotopes and toxic chemicals. Since fixed sensors can't be placed everywhere, the solution could soon be in everyone's hands. Gentag, a Washington,...

This monthly review lets you "meet" the new advertisers appearing in Defense Tech Briefs (DTB). Here's a sneak peek at the products, services, and offers available from June's first-time advertisers. Alpha Security Group is a publicly traded company that seeks to acquire a homeland security or defense business. Contact Steve...

This modulator was developed to provide circuitry and apparatus that create specialized optical signals suitable for use as a digital photonic clock, a pulse amplitude modulator, and a bi-stable optical memory cell. More information here.

Researchers from Freight Pipeline Company (FPC) taking part in a National Science Foundation (NSF)-sponsored project have found that bricks made from fly ash -- fine ash particles captured as waste by coal-fired power plants -- may be even safer than predicted. Instead of leaching minute amounts of mercury as earlier predicted, the...

Madison Electric Products (Mentor, OH) offers the C-face ring tachometer that monitors motor shaft RPM when using NEMA C-face, metric flanged, or faced motors. The device is designed with a dual C-face mount to fit between the motor and gearbox, break, or clutch, and has a slim-line profile. Features include single and quadrature...