Archive for the ‘electronics’ category: Page 34

Mar 19, 2020

Electromagnetic pulse (EMP) radiation

Posted by in category: electronics

This could used to emp laser missiles or other targets.

The electromagnetic pulses (EMPs) generated during the interaction of a focused 1.315-μm sub-nanosecond laser pulse with a solid hydrogen ribbon were measured. The strength and temporal characteristics of EMPs were found to be dependent on the target density. If a low density target is ionized during the interaction with the laser, and the plasma does not physically touch the target holder, the EMP is weaker in strength and shorter in time duration. It is shown that during the H2 target experiment, the EMP does not strongly affect the response of fast electronic devices. The measurements of the EMP were carried out by Rohde&Schwarz B-Probes, particularly sensitive in the frequency range from 30 MHz and 1 GHz. Numerical simulations of resonant frequencies of the target chamber used in the experiment at the Prague Asterix Laser System kJ-class laser facility elucidate the peaked structure of EMP frequency spectra in the GHz domain.

Mar 10, 2020

Continuous Glucose Monitoring System

Posted by in categories: biotech/medical, electronics

Check your blood glucose without fingersticks using the FreeStyle Libre System, a continuous glucose monitoring system that includes a sensor and reader.

Feb 12, 2020

Graphene forms under microscope’s eye

Posted by in categories: electronics, materials

You don’t need a big laser to make laser-induced graphene (LIG). Scientists at Rice University, the University of Tennessee, Knoxville (UT Knoxville) and Oak Ridge National Laboratory (ORNL) are using a very small visible beam to burn the foamy form of carbon into microscopic patterns.

Scientists record the formation of foamy laser-induced graphene made with a small laser mounted to a scanning electron microscope. The reduced size of the conductive material may make it more useful for flexible electronics.

Feb 7, 2020

Researchers develop stretchy wearable electronics from liquid metal

Posted by in categories: electronics, wearables

Read more

Feb 6, 2020

Excalibur S GPS/laser-guided artillery shell homes in on moving target

Posted by in categories: electronics, military

Raytheon and the US Navy have successfully fired a precision-guided munition that can be fired from a howitzer and zero in on a moving object. The recent test of the Excalibur S round not only demonstrated its ability to switch from GPS to laser guidance to find its target, but also that its electronics and sensors can withstand the shock of being fired out of a gun.

The Excalibur S is the latest variant of Raytheon’s Excalibur line of smart projectiles. Developed by Raytheon and BAE Systems Bofors, it uses the GPS technology from the Excalibur Ib, and combines it with a semi-active laser seeker that allows it to home in on moving land and maritime targets with a miss radius of under two meters (6.5 ft).

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Feb 5, 2020

China Deploys Infrared Sensors to Detect Infected Citizens in Public

Posted by in category: electronics

They say it can detect fevers from a distance.

Feb 5, 2020

Maxar says last year’s unnamed GEO order is new Intelsat satellite

Posted by in categories: electronics, satellites

WASHINGTON — Maxar Technologies says the geostationary satellite order it disclosed in November without naming the customer is a high-throughput Intelsat spacecraft that will also carry a pollution sensor for NASA.

Intelsat announced Feb. 3 that it had selected Maxar to build Intelsat-40e, a satellite that will provide high-throughput coverage of North America and Central America.

Intelsat-40e will also carry NASA’s Tropospheric Emissions: Monitoring of Pollution (TEMPO) hosted payload under a NASA contract with Maxar.

Jan 30, 2020

Rare ‘floating city’ deep-sea creature caught on camera by stunned scientists

Posted by in categories: electronics, governance

A creature so rare that it has only a few recorded sightings across the world has been caught on camera by stunned scientists.

The benthic siphonophore, which looks like a single animal, is actually a “floating city” of many smaller organisms working together.

The creatures are so rarely seen that their ecology is almost unknown, though they are thought to make their home at depths of up to 3000m.

Jan 25, 2020

Spacewalk to Repair Alpha Magnetic Spectrometer Outside International Space Station on Jan. 25, 2020

Posted by in categories: cosmology, electronics

Live Spacewalk: Watch as astronauts complete the intricate process of repairing the Alpha Magnetic Spectrometer (AMS), a dark matter and antimatter detector outside the International Space Station.

On Sat., Jan. 25 at 6:50 a.m. EST, tune in for a live spacewalk as Luca Parmitano of the European Space Agency (ESA) and Andrew Morgan of NASA perform the fourth and final spacewalk to repair AMS, which has far outlived its planned three-year lifespan. In addition to revitalizing an important piece of scientific equipment, the process of creating the tools and procedures for these spacewalks is preparing teams for the types of spacewalks that may be required on Moon and Mars missions.

Jan 24, 2020

A TV satellite is about to explode following ‘irreversible’ battery damage

Posted by in categories: electronics, satellites

A Boeing-made TV satellite is being hastily moved into ‘graveyard orbit’ following a devastating ‘anomaly’ that turned its batteries into bombs.

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