Abstract: With the continuous improvement of the accuracy of inertial devices and systems, the effects of gravity disturbance on autonomous inertial navigation system (INS) calculations cannot be ...

One of the recurring themes in this column over the past few years has been the development of new test methods for sandwich composites. This is primarily a result of the opportunities I’ve had to ...

Soil testing is an essential tool for managing phosphorus, potassium and other nutrients in Iowa and many states. The units reported in a soil test are expressed in parts per million (ppm) of the ...

Counterfeit gold coins cost collectors and investors millions of dollars each year. The U.S. Mint has been striking gold coins since 1795, and fakes have followed almost as long. Today's ...

Gilson’s SG-4 Asphalt Bulk Specific Gravity device is a quick and accurate method for bulk specific gravity determinations of asphalt cores and gyratory specimens. Uses a precision ...

Wide binary stars with separation greater than about 2000 astronomical units are interesting natural laboratories that allow a direct probe of gravity at low acceleration weaker than about 1 nanometer ...

Wide binary stars with separation greater than about 2000 astronomical units are interesting natural laboratories that allow a direct probe of gravity at low acceleration weaker than about 1 nanometer ...

Lucid’s Gravity is a three-row electric SUV, but it’s faster than most sports cars. Boasting up to 828 hp, the luxury SUV can accelerate from 0 to 60 mph in less than 3.5 seconds. The Lucid Gravity ...

Abstract: Addressing issues such as low testing efficiency, easy introduction of installation errors, and turntable errors in the gravity field testing of the JN-06 quartz flexure accelerometer, a ...

ABSTRACT: To assess the feasibility of using an external microphone array for detecting bark beetle densities in Ponderosa pine trees, we conducted acoustic characterization tests on bark samples.