The sand timer hourglass is sometimes referred to as a sand clock or a sandglass. Like other timepieces, it needs to be carefully calibrated. The hourglass maker must test the instrument and fine tune it to measure the correct length of time.

There are many factors that contribute to the ability of an hourglass to accurately measure time. The…[Leia mais]

For metal producers, processors, recyclers, contractors and others, continuous quality control plays a key role in establishing the identity and composition of various metals and alloys from initial melt to finished product or end use. Metals and alloys need to be accurately sorted, identified, and verified at each stage of the process to make…[Leia mais]

There are many criteria to consider when selecting a high temperature grease for hot, grease-lubricated equipment.

The selection must include consideration of oil type and viscosity, oil viscosity index, thickener type, stability of the composition formed by the oil and the thickener), additive composition and properties, ambient temperature,…[Leia mais]

Looking for a new way to resupply ground troops, the US Air Force Research Laboratory (AFRL) has ordered 15 cargo glider drone/runway drone from Silent Arrow, a company of Yates Electrospace.

The AFRL ordered the “Silent Arrow Precision Guided Bundle”, a new glider variant that is a smaller version of the “Silent Arrow GD-2000” drone, which S…[Leia mais]