#Radio waves

[thelambliesdown1974]

Old men type out their will and testament in Simon and Garfunkel YouTube comment section

[post-leffert]

For An Anarchist Radio Relay League

A free zine about amateur radio for anarchists.

For an Anarchist Radio Relay League (0.24.1.1)

For an Anarchist Radio Relay League (0.24.1.1) -booklet

However, in a time when the United States government is fighting tooth and nail for the preservation of its own legitimacy while simultaneously eviscerating community services by way of privatization (Health Care, Postal Service, Public Land, Public schools, you name it), it is as important for the anti-authoritarian Working Class to learn about the science and art of radio communication as it is to learn how to grow food and shoot straight. (read "Factories, Fields, and the Firearms to Defend Them" by Hybachi LeMar )

In fact, in October of 2020, Ajit Pai's* FCC** ordered amateur access to the 3.5GHz band to be "sunset" (http://www.arrl.org/news/fcc-orders-amateur-access-to-3-5-ghz-band-to-sunset ) so that the frequency space can be sold to private companies to expand the new 5G mobile network. While this isn't exactly disastrous for anyone other than a specific sub-set of Hams***, it is par for the course for this early half of the 21st Century that the government would sell off public property to the highest bidder so that private companies can sell it back to "Consumers" and lock poor people out of access to something as ubiquitous as air or water. Sound familiar? (https://iaffaiorg.wordpress.com/2020/10/11/skills-for-revolutionary-survival-5-communications-equipment-for-rebels/)

[generationlossupdates]

On a scale of 10-10 HOW EXCITED ARE YOU FOR FOUNDERS CUT!!

No typo was made here 🤗🤗

100!! I AM SO HYPED FOR THIS!! BEEN WAITING FOR THIS ONE!!

[mindblowingscience]

The very lowest frequencies of the radio Universe have just been revealed in spectacular clarity. A team of astronomers has used a new calibration technique to give us the first sharp images of the radio Universe in the frequency range of 16-30 megahertz – an achievement previously thought impossible, due to the turbulent interference generated by Earth's ionosphere. "It's like putting on a pair of glasses for the first time and no longer seeing blurred," says astronomer Christian Groeneveld of Leiden University in the Netherlands, who led the research. Seeing the Universe with radio eyes presents some interesting challenges at the best of times.

Continue Reading.

[unbfacts]

[quirkwizard]

What do you think Overhaul and Radio Waves would make?

Quirk Marriage between Overhaul and Radio Waves please 🥺

New Quirk Name: Radio Star

This Emitter type Quirk allows the user to detect, control, and alter artificial electrical signals within a long range of themselves. This control is precise and refined, able to intercept or alter any sort of radio signal traveling through the air, such as spoofing enemy messages or sending a specific one to a nearby phone. This can let the user influence technology as well by influencing how and where the signals move. This can let the user change how the electronics function as well, like misfiring a signal in a car to make it go backwards instead of forwards. This gives the user a dangerous power, allowing them to control the signals around them to undermine their foes. They can disrupt enemy communications, cause malfunctions in technology, side out hidden codes and messages to their allies, bypass electronic devices like car locks, influence technology in their favor, cause immense chaos with large-scale breakdowns and blackouts, or simply turn their own hands as a universal remote for all of their electronics. Though this only works on artificial electrical signals, the power is less useful in areas with little to no technology, and they cannot change the function of the device. The usage of this Quirk is dependent on the user's hands and will require some finesse in order to properly change in the signals.

[materialsscienceandengineering]

Measuring Length: Transit-Time Measurements

One method of measuring distance, or length, is to emit a signal toward an object and measure the length of time it takes for that signal to return. Any signal can work for this method (sound, light, etc.), so long as the math for the speed of that signal is known (such as the speed of sound in water, or the speed of light in air, etc.). Then, a mathematical calculation can be performed to determine the distance between the signal emitter and the object.

Radar is one example of this method, using radio waves to determine distance. Another example is the global positioning system (GPS), which determines distance based on the time difference between your device and the signals sent from multiple satellites.

Sources/Further Reading: (Image source - University of Illinois) (NIST) (radartutorial.eu) (Wikipedia)

[the-garbanzo-annex-jr]

by Abigail Klein Leichman

Radio waves emitted from the hydrogen gas that filled the universe millions of years ago may contain clues about the cosmic “dark ages” before the formation of the first stars.

This study was led by Prof. Rennan Barkana’s research group, including the postdoctoral fellow Rajesh Mondal. Their novel conclusions have been published in Nature Astronomy.

The researchers explain that while every car has an antenna that detects radio waves, the specific waves from the early universe are blocked by the Earth’s atmosphere. They can only be studied from space, particularly the moon, which offers a stable environment, free of any interference from an atmosphere or from radio communications.

They say that putting a telescope on the moon isn’t an impossible dream, given that the United States, Europe, China and India are engaged in an international space race to return to the moon with space probes and, eventually, astronauts. Their research may intrigue one of these countries to try detecting radio waves from the cosmic dark ages.

Barkana explained: “NASA’s new James Webb space telescope discovered recently distant galaxies whose light we receive from the cosmic dawn, around 300 million years after the Big Bang. Our new research studies an even earlier and more mysterious era: the cosmic dark ages, only 50 million years after the Big Bang.”

Barkana said that conditions in the early universe were quite different from today and that using radio observations to determine the density and temperature of hydrogen gas at various times can reveal what is still to be discovered.

Furthermore, a radio telescope consisting of an array of antennas could accurately determine the amount of hydrogen and of helium in the universe. Hydrogen is the original form of ordinary matter in the universe, from which stars, planets, and eventually life began.

[weirdyearbook]

Source details and larger version.

Tune into this weird collection of vintage radio imagery.

[zal-cryptid]

DC characters - Krakkl

[yeowninefive]

Radionics

[thelambliesdown1974]

Real person fiction? No….. Real person fact

[phlebotomies]

As a phlebotomist that needs a lobotomy, I immediately followed you just from your username without looking at anything you post

YIPPEE! thank you for your service as a phlebotomist o7

[generationlossupdates]

has the founder's cut of generation 1 been published yet? I've been looking for it but I have no idea if it's been released or not lmao

it's not out yet!! u havent missed anything dw ^_^

[mindblowingscience]

Astronomers watched 35 explosive outbursts from a rare repeating "fast radio burst" (FRB) as it shifted in frequency like a "cosmic slide whistle," blinking in a puzzling pattern never seen before. FRBs are millisecond-long flashes of light from beyond the Milky Way that are capable of producing as much energy in a few seconds as the sun does in a year. FRBs are believed to come from powerful objects like neutron stars with intense magnetic fields  —  also called magnetars  —  or from cataclysmic events like stellar collisions or the collapse of neutron stars to form black holes. Complicating the FRB picture, a few FRBs are "repeaters" that flash from the same spot in the sky more than once, while the majority burst once and then vanish.

Continue Reading.

[zef-zef]

Lia Kohl - Untitled Radio (futile, fertile) (Longform Editions, 2022)