Many people ask us for conversions between microwave measurement units so that they can compare the units we use, volts per metre (V/m), with watts per metre squared (W/m2). For modern digital telecommunications signals, this is not as easy, or as useful, as you would first think that it would be.
For continuous-wave transmissions, including VHF FM radio signals, the conversion is relatively easy. These signals remain fairly constant in amplitude and the conversion from signal strength in volts/metre to power flux density (PFD) in watts per square metre can be done using the formula:
The problem occurs because PFD is ONLY relevant to heating and it averages the power over time (6 minutes for official RF PFD measurements). Any PFD has to be integrated over time and most hand-held instruments average over at least a few seconds. Some instruments have a "peak-detect" facility that can give the equivalent power as if the pulsing peak levels were continuous. Note this is not the same as a "max hold" facility. This is because the normal max hold function on a meter gives you the maximum RMS value measured over the time you have been using the instrument, whereas peak detect measures the level at the top of any pulses in the signal.
Powerwatch believes that the best unit of measurement for varying microwave signals at the non-thermal levels we are concerned with is volts per metre. Most instruments that display PFD units have actually measured the signal in terms of V/m and then internally calculated the equivalent (usually average) PFD value in W/m2 or similar.
A Seacor Power lift boat is capsized in the Gulf of Mexico about 8 miles from the coast near Port Fourchon, La., Sunday, April 18, 2021. The Seacor Power lift boat capsized in the Gulf of Mexico on Tuesday after a storm, leaving 4 dead, 9 missing and 6 rescued. (Photo by Sophia Germer, NOLA.com, The Times-Picayune The New Orleans Advocate)
The hearing is at a hotel in Houma. It started Monday and is set to end Aug. 13, the Coast Guard announced in a news release. The hearing is open to the public and will be livestreamed so people can watch online if they can't attend in person.
The hearing started at 8 a.m. Monday with opening remarks from Coast Guard Capt. Tracy Phillips and Andrew Ehlers, a marine accident investigator at the National Transportation Safety Board. Watch their remarks.
Lift boats have three legs that can be lowered to the sea floor to raise up the ship so it can serve as an offshore platform. When the ship is in transit, the legs are raised and stick straight into the air.
"One Book, One College, One Community" is a collegewide reading project, designed to promote a shared experience of intellectual engagement and dialogue across programs at De Anza.
Oakland-born Alicia Garza, a longtime organizer and co-founder of #BlackLivesMatter Global Network, says she wrote The Purpose of Power" to serve as "an essential guide to building the type of movements that can address the challenges of our time."
To learn more about the club and get your free copy of "The Purpose of Power," join our Discord channel or send an email to vidaoff...@gmail.com. The One Book Student Book Club is co-sponsored by VIDA (Vasconcellos Institute for Democracy in Action) and DASG (De Anza Student Government).
The One Book, One College, One Community initiative joined with First Year Experience and other Learning Communities in hosting an online screening and conversation with the makers of "We Still Here." This film is about the youth of Comero, Puerto Rico, and their efforts to rebuild their community after Hurricane Maria, including their journey to protest in Washington, D.C.
The Feb. 17 showcase was a great opportunity to connect with the De Anza community and enjoy creative student presentations on the theme of "Racial Justice and the Crisis of Democracy." If you missed the online event, you can still watch the video recording.
Prime Video came in hot this year with a string of must-watch original series that dominated the social conversations over the length of their runs, and there might be another hit on the way with The Power, a new sci-fi series premiering March 31.
When teenage girls develop the ability to electrocute anything at-will, they also figure out a way to awaken this power in women of all ages. Soon, the entire balance of society shifts into something more matriarchal.
The Power is exclusively available to Amazon Prime or Prime Video subscribers. Amazon Prime costs $14.99/month or $139/year and comes with a bunch of perks aside from Prime Video, including free two-day shipping, savings at Whole Foods, and a free year of Grubhub+.
Princess Power Season 2 is available to watch on Netflix. It is a popular streaming service that offers a wide range of movies, TV shows, and original content for subscribers to watch online.
The cheapest Netflix Standard with Ads Plan provides all but a few of its movies and TV shows. However, it will show ads before or during most of its content. You can watch in Full HD and on two supported devices at a time.
Anubhav Chaudhry serves as an SEO Content Writer for ComingSoon.net, blending his profound love for cinema with expertise in search optimization. When he's not analyzing films or series, Anubhav passionately follows football and enriches his entertainment knowledge with streaming content binges. With Anubhav's pieces, expect a confluence of SEO acumen and cinematic insight.
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