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A few months ago, our AM radio hot dog experiment went mildly viral. That was a result of me asking my Dad 'what would happen if you ground a hot dog to one of your AM radio towers?' He didn't know, so one night on the way to my son's volleyball practice, we tested it. And it was awesome.
There's a video and some pictures in my hot dog radio blog post from back in March.
Fast forward a few months and one Open Sauce later, and Jay from Plasma Channel visited us in St. Charles, MO, for round two—where my Dad and I were prepared to measure (almost) everything: SWR, RF forward power, SDR on site, AM field intensity 25km (16mi) away, meat thermals, and—courtesy of Jay—some taste testing!
Industrial networking is vital to today’s manufacturing landscape. From different types of networks to key components and best practices, this guide will help you navigate the intricacies of industrial Ethernet networking. See video.
“We just had a midair,” the pilot of the Hawker is heard saying in an audio recording posted on LiveATC.net, which shares live and archived recordings of air traffic control radio transmissions.
Someone in the control tower responds by saying, “Say what?”
“You guys cleared somebody to take off or land, and we hit them on a departure,” the Hawker pilot says.
The recent accident in Houston is just the latest noteworthy instance in what a major New York Times investigation this summer determined to be “an alarming pattern of safety lapses and near misses in the skies and on the runways in the USA.” According to internal records of the Federal Aviation Agency, the Times reported that these safety lapses and near misses occurred as a “result of human error.” The Times report further revealed that “runway incursions” of the sort described above have nearly doubled, from 987 to 1732, despite the widespread proliferation of advanced technologies. //
While the disturbing decline in aviation safety is complex and multifaceted, we identified two major contributing factors that have received scant media attention. The first such factor is the likely contribution of disastrous COVID-era policies to the staffing shortage of many air traffic control rooms. The second factor is that aggressive affirmative action policies implemented during the Obama administration have resulted in a catastrophic collapse in the quality of controllers. In short, COVID policies have gutted the quantity of air traffic controllers, and diversity policies have gutted the quality of air traffic controllers, creating unprecedented danger for the aviation industry. //
The implications of these findings reach far beyond the scope of aviation, as important as this industry is. Rather, the collapse of the aviation industry must be understood in the context of a broader collapse in our ability to maintain the infrastructure of a First World society. This is a major and significant trend that we highlighted years ago in our coverage of the repeated failures of Texas’ electric power grid.
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Bridge collapses put transportation agencies’ emergency plans to the test
Thread starterJournalBot Start dateYesterday at 1:12 PM
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Agencies need to build or find excess vehicle capacity before a bridge fails.
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Yesterday at 3:52 PM
#161
rabidk said:
As a practicing long-span bridge engineer, this is absolutely correct. It is not feasible to economically design a bridge to directly resist vessel impact.
It comes down to energy transfer and dissipation. Based on fundamental physics, the force of the impact is a function of mass times acceleration, or rate of change of distance over time (F = MA = ML*t^2) . The longer the vessel is deaccelerated, the smaller the force.
The Notre Dame cathedral in Paris has been undergoing extensive renovation in the wake of a devastating 2019 fire. Previously hidden portions of its structure have revealed the use of iron reinforcements in the earliest phases of the cathedral's construction, making it the earliest known building of its type to do so. //
“Compared to other cathedrals, such as Reims, the structure of Notre Dame in Paris is light and elegant,” Jennifer Feltman of the University of Alabama, who was not involved in the research, told New Scientist. “This study confirms that use of iron made this lighter structure at Paris possible and thus the use of this material was crucial to the design of the first Gothic architect of Notre Dame.”