Exploring Physics

Podcasts about Physics

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Episodes about Physics

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... Potentially the silliest bonus episode we've ever recorded.  The Supermassive Team takes on your questions; What are Brown Dwarfs? How can photons have different energies? Do frozen stars exist? And they get extremely distracted by the concept of nuclear pasta. Even Producer Richard gets involved.  Here's the paper mentioned by listener Hanna, Thermodynamics of Frozen Stars The Supermassive Podcast is a Boffin Media production. The producers are Izzie Clarke and Richard Hollingham. 
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Foundations of Amateur Radio Have you ever attempted to download an email attachment, or watch a streaming service whilst your microwave was cooking lunch or dinner and noticed that something odd was happening, or is my asking that question the first time that you joined the dots? This phenomenon is not by accident, though it isn't on purpose. In 1947 the International Telecommunications Union, the ITU, was meeting in Atlantic City where the "delegate of the United States, referring to his request that the frequency 2450 Mc/s be allocated for I.S.M., indicated that there was in existence in the United States, and working on this frequency a diathermy machine and an electronic cooker, and that the latter might eventually be installed in transatlantic ships and airplanes. There was therefore some point in attempting to reach world agreement on this subject." Several things to unpack there. It's 1947 and experimentation is happening at 2,450 Mega-Cycles per second, what we call megahertz today; you might recognise the frequency as 2.45 GHz. At that time, experiments using radio frequencies for medical purposes has been in full swing for decades. Nikola Tesla wrote a paper on the subject that was presented in absentia to the American Electro Therapeutics Association in 1898. In 1947, a diathermy machine exists; today its used to aid with blood flow, muscle and joint pain as well as inflammatory and degenerative bone disease. There is a working electronic cooker, a microwave oven to you and I, and whilst the one you could buy in 1947, a Raytheon "Radarange", if you forked over $5,000, or $70,000 in today's money, had space for a 2 meter tall, 340 kilogram, 3 kilowatt behemoth, you have to admire the imagination that one day this would fit on an aeroplane to travel the world, let alone be available for $100 at your local supermarket. One other thing, I.S.M. or Industrial, Scientific and Medical is a concept we still use today. The idea being that there are uses for radio waves that are nothing to do with communication, like microwave ovens, steel smelting through induction heating, surgical uses like cauterising wounds, some cancer treatments and plenty more. One of the ideas behind ISM is that equipment operating in those frequencies must tolerate any interference generated by ISM applications. The other part of the ISM idea is that it's unlicensed, which is very attractive to people who experiment and why it became popular for other uses beyond heating your lunch. Consider that baby monitors, garage door openers, car security systems, video senders, cordless phones, wireless speakers and microphones, cordless keyboards and mice, radio controlled models, and smart power meters all share the same radio frequencies. Then there's Wi-Fi, Bluetooth, and Zigbee, also using the same 2.4 GHz ISM band. Yeah, even the two most popular network technologies on your phone and computer, Wi-Fi and Bluetooth are competing with each other and the microwave oven in the kitchen. There are six global ISM bands and six additional ones with specific local requirements. Things like industrial microwave ovens, Near Field Communications or NFC and LoRaWan use frequencies like that. You'll also find satellite communications, radio location, CB radio, radio astronomers and radio amateurs on those bands. So, why are these technologies sharing the same frequencies? Essentially because they're unlicensed spectrum. Just so we're clear, this doesn't mean that it's unregulated spectrum. All it means is that unlike licensed spectrum, you don't need to buy access to the spectrum to use it, but you do need to have compliant equipment when you do. Compliance depends on local laws, location, band and power levels. So, next time you need to watch a movie whilst cooking lunch, eat an apple or go outside and get some daylight onto your skin instead. A quick word on power. Whilst all these uses share the same frequency band, their human impact varies considerably. A Wi-Fi network uses a tenth of a Watt. A diathermy machine uses 250 Watts and produces a "gentle heat" at the surface of the skin, suitable for treatment. Contained inside a metal box, a microwave oven uses 1,000 Watts or more. Even that doesn't cook food from the inside out, instead it vibrates water molecules in the food, which heat up, which in turn cooks the food. It doesn't penetrate very far and doesn't work on frozen water, which is why you need to defrost your food before you can cook it. It's also why when you stand between your Wi-Fi router and the computer things slow down, or why your hand position on your phone or tablet can make a difference, since your body, made from 60% water, is blocking the signal. Finally, here's something to consider. A licensed radio amateur has access to some ISM bands, but does it require an amateur license to actually use any of those bands? In other words, if my amateur license doesn't permit my access to 2.4 or 5.8 GHz bands, can I legally use a transmitter in the unlicensed spectrum that is the ISM band on those frequencies? If you answered yes, and you're considering experimenting on the ISM bands, you'll find the Low Frequency Experimental Radio or LowFER, MedFER and HiFER community has already beaten you to it. Within the ISM regulations are provisions for all kinds of other experiments, generally using low power, sometimes a Watt, sometimes less, but you already know that my 10 mW beacon on the 10m band has been heard 13,945 km away, so there's plenty of opportunities to play. I'm Onno VK6FLAB
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We’re releasing episodes from our mini failure library while we’re on production hiatus. This week’s Mini Failure is about the Artemis Project. It’s not really about a failure, but as our last mini failure before our hiatus, we wanted to talk about an engineering project we thought was interesting. The artemis project is aiming to put people back on the moon. Original Air Date: August 20, 2023 Episode Sources https://www.nasa.gov/specials/artemis/ https://en.wikipedia.org/wiki/Artemis_program Ways to get in touch with us Email - thefailurologypodcast@gmail.com Website - www.failurology.ca
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What's in the Night Sky for March? Cosmic Corner is presented by Paul Evans, Sinéad Mannion, and Graham Sales. Highlights for March's podcast include details on upcoming Irish Astronomy Week, more on irishastronomyweek.ie, and Midlands Astronomy event Cosmos, see midlandsastronomy.ie. .Solar cycle 25 is very active so be on the lookout for Aurora, Paul will tell you the best times and websites to use. March skies make for a possible Mercury sighting, a rarity even for the most experienced astronomer and Graham updates us on the Japanese lunar lander, Slim ... Keep Looking Up!... Paul, Graham & Sinéad
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In lieu of a full episode this week, I am introducing my new online guided course The Universe is Speaking to You through Numbers which is an Introductory Course to Numerology and How to Interpret Numeric Patters for Personal Alignment. Learn to decipher the messages you receive in the form of angel numbers for yourself rather than falling down the Google rabbit hole only to receive generic, impersonal information. So much can be gained when you learn to speak the language of the Universe! Check it out in the Shop on my website linked below available on 11/11! GIVEAWAY ANNOUNCEMENT! Win a free 30-minute Introductory Numerology Reading with me by simply rating and reviewing Between 2 Realms on Apple Podcasts! Email screenshot of your review submitted to me at Lauren@IlluminatedLifeHealing.com to get entered into the drawing to win! Submissions must be received prior to November 10th, at 12 PM EST to be included in the drawing. The winner will be announced on 11/11! More details within the episode and can be found on the Podcast page of my website.   The Universe is Speaking to You Through Numbers: An Introductory Course to Numerology and How to Interpret Numeric Patterns for Personal Alignment available for purchase on 11/11 via the link below! illuminatedlifehealing.com/shop   More details on the FREE NUMEROLOGY READING GIVEAWAY here! illuminatedlifehealing.com/podcast   Numerology Readings can be booked via my website booking page at illuminatedLifeHealing.com/booking-1.   Follow me on Instagram at instagram.com/illuminated_life_healing Follow me on Facebook at facebook.com/illuminatedlifehealing  
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In this episode, I talk about how quantum spin and how bosons and fermions differ from their wave functions and their rotational properties, and how this results in the existence of matter.
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Join Dr. Chance takes his audience on a journey if time travel is possible.  Do you have a question for Dr. Chance Glenn? You can Tweet them to him @Professor_Glenn, or @DebriefMedia. Also, be sure to check out the video installments of "Ask Dr. Chance" on The Debrief's official YouTube Channel.  Follow The Debrief Follow Us: Web: https://thedebrief.org/ Twitter: https://twitter.com/Debriefmedia  Facebook: https://www.facebook.com/thedebriefnews  Instagram: https://www.instagram.com/thedebriefmedia/   
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This week's episode of Clear and Present podcast takes a closer look at biodefense and the Department of Defense's revised biosecurity postures. We're joined by Dr. Diane DiEuliis from the National Defense University, who'll walk us through the current and future states of biodefense. Tune in now and let us know what you think! The episode is available on iTune, Spotify and Google Podcast.
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In this episode of Dear People Of Earth Podcast, we talk about the UFO and UAP activism work of Steve Bassett, spanning almost 30 years. Hear about what Steve believes is happening, his thoughts on disclosure, the development of his new non-profit think tank and where we go after disclosure. You may also view this on Youtube beginning 9-12-2023.    YOUTUBE CHANNEL - Here Homepage - Here   More About Steve Bassett Stephen Bassett is a political activist, Disclosure advocate and the executive director of Paradigm Research Group (PRG) founded in 1996 to end a government-imposed embargo on the truth behind extraterrestrial related phenomena. He has spoken to audiences around the world about the implications of "Disclosure" - the formal confirmation by heads of state of an extraterrestrial presence engaging the human race. He has lectured around the world on the political implications of UAP/ET phenomena and given over 1200 radio and television interviews. PRG's advocacy work has been extensively covered by national and international media including being featured on CNN, Fox News, MSNBC and in the Washington Post and New York Times.   In 2013 PRG organized and conducted a "Citizen Hearing on Disclosure" at the National Press Club in Washington. In November of 2014 PRG launched a two-year political initiative out of Washington, DC that injected the ET issue into the 2016 presidential campaign. Bassett has appeared in many documentary films and his lectures and interviews are well represented on YouTube.       Steve will soon be part of a new project based out of Los Angeles, CA.   Main website: www.paradigmresearchgroup.org PRG Media coverage: https://paradigmresearchgroup.org/prg-media-coverage/