Podcasts about physics central

I was recently looking at ideas for at home learning and I came across a fun investigation from “Physics Central.” The investigation is entitled: “Create Your Own Rainbow.” The investigation and rainbows share the same principles:  refraction — light bending reflecting — light bouncing back

This episode features How to Teach Kids to Be Kind, Physics Central, iCivics, Bookboon.com, and Instructables. Say "hi" to Jim at james.roberts@wdbqschools.org. Thanks for listening!!!!!

They say a fish can fall in love with a bird, but where would they live? However, when it comes to fluid dynamics, birds and fish come from more similar neighbourhoods than you might think.  This podcast is about the physics of fish schooling and bird flocking and how these animals use their fluid environment - and each other - to get around.  That's schooling and flocking. Dr Hassan Masoud is Assistant Professor of Mechanical Engineering, University of Nevada, Reno and he recently co-authored a paper on the hydro dynamics of collective locomotion.  Birds fly in flocks and fish swim in schoools - so why?  It turns out that fluid dynamics can go a long way to answering that question. Dr Masoud talks to Meg Rosenburg in this podcast which first appeared on Physics Central, the 'physics buzz blog' of the of the American Physical Society.   Photo: Starlings and sunset, Brighton by Joe Flintham

What is sound? The function of music...very cool clip (Devour) What is sound? Explains pretty much everything Johnny was talking about (Explain That Stuff!) A comprehensive sound wave resource, including a cool slow-motion clip on sound waves in wine glasses (University of Salford) The nature of sound (Physics Hypertextbook) Sound waves are 'longitudinal', like when you compress a slinky (University of Salford) Animation of how longitudinal waves travel (i.e. sound waves) (Wikimedia Commons) An article about synthesisers, but with some relevant sections on sound energy, wave shapes & harmonics (Explain That Stuff!) In space, no one can hear you scream (Qualitative Reasoning Group, Northwestern University) No sound in a vacuum, no sound in space (Physics Central) Human ears evolved from ancient fish gills (livescience) What evolved first, sight or hearing? This scientist tries to figure it out (Small Accidents of Evolution) Radar & sonar (Scholastic) Evelyn Glennie: A deaf virtuoso percussionist (Wikipedia) Sound & light compared (GCSE, BBC) Frequency & pitch (School of Physics, UNSW) What is frequency? (Indiana University) Scientists capture the sound of an atom for the first time (IFL) Speed of sound (Wikipedia) The speed of sound in different media (HyperPhysics, Georgia State University) How we speak & sing...turns out there's a lot to it (School of Physics, UNSW) Vocal sound production (Physics Hypertextbook) Hearing range for humans vs other species (Wikipedia) How well do dogs & other animals hear? (Louisiana State University) The evolution of hearing (Evolution of hearing) What are hertz? (Wikipedia) Animation: A sine wave with varying frequency (Wikipedia) The speed of sound appears to be just related to density...Lucy couldn't figure out if different atoms & molecules vibrate differently in this context (Explain That Stuff!) The speed of sound in other materials (NDT Resource Center) How do speakers work? (physics.org) Loudspeakers (Explain That Stuff!) Angus & Julia Stone (Wikipedia) AC/DC (Wikipedia) Animation: FM waves have their frequency modulated & AM waves have their amplitude modulated (Wikipedia) Middle C has a frequency around 261.6 hertz, when using the A440 pitch standard (Wikipedia) What is pitch? Our definition of different notes has changed over the centuries! (Encyclopaedia Britannica) What is tone? (Encyclopaedia Britannica) Online tone generator...take that tone with me! (Online Tone Generator) Forced vibration & resonance (the Physics Classroom) "The brown note is a hypothetical infrasonic frequency that would cause humans to lose control of their bowels due to resonance" (Wikipedia) Fundamental frequency & harmonics (the Physics Classroom) Strings, standing waves & harmonics (School of Physics, UNSW) How does a guitar work? (School of Physics, UNSW) What guitar strings are really doing up close (Science Alert) How does a piano work? (Explain That Stuff!) Clip: This is nuts! Making a real sound wave out of falling water & a speaker (Brusspup, YouTube) Clip: Cool experiment immersing a speaker in water & making sound waves you can see (Showtime SPL, YouTube) Clip: Inside a piano (VeryUsefulTools, YouTube) A band where the piano player puts his arm inside the piano (Dawn of Midi) Podcast about Dawn of Midi (Radiolab) 'Circle of fifths' podcast that Johnny mentioned (Surprisingly Awesome) Infographic of guitar anatomy & how they work (Best Infographics) What is a fret? (Wikipedia) What is an octave? "The basic miracle of music" (Wikipedia) What is an octave? (Encyclopaedia Britannica) Western music scales (Wikipedia) Non-Western scales (Wikipedia) There are 12 notes in our music system, the main ones plus the sharps & flats (Zebra Keys) Pic: Guitar fret dots (My Guitar) Tacoma Narrows bridge that collapsed, believed to be caused by 'forced resonance' (Wikipedia) Clip: Breaking a wine glass with sound (MIT Video) What is audio feedback? (Wikipedia) Fact or fiction? An opera singer's piercing voice can shatter glass (Scientific American) Clip: A MythBuster's glass shattering montage (Jaime Vendera, YouTube) Hearing & hair cells...apparently they don't grow back naturally so be careful kids (University of Wisconsin) Compound regenerates auditory hair cells, offering a possible treatment for deafness (Scientific American) Bionic Ear Lane, Melbourne (street-directory.com.au) Interview: Professor Graeme Clark, developer of the cochlear implant (Australian Academy of Science) How does a cochlear implant work? (Cochlear) What is brain plasticity & why is it so important? (The Conversation) Training the brain to hear better (TIME) How does a microphone work? Simple conversion of sound energy (Explain That Stuff!) How do ears work? (Australian Hearing) The ATR2100 USB - Strange Attractor's microphone of choice (audio-technica) Neil from The Young Ones (Wikipedia) Bang & Olufsen are indeed Danish (Wikipedia) You can now get speakers that are panes of glass (Clear View) The rude gesture Johnny was making to explain how speakers & mics work (Shutterstock) Taylor Swift Sound recording onto analog cylinders & records (Wikipedia) How record players & phonographs work (Explain That Stuff!) The golden record on Voyager (JPL, NASA) What are MP3 files? (Explain That Stuff!) Gif: Master record cutting (vinyl gif) Ye olde wax cyclinders for phonographs (The Cylinder Archive) Phonograph cylinders (Wikipedia) Clip: How vinyl records are made (Part 1) (forwardbound, YouTube) Clip: How vinyl records are made (Part 2) (forwardbound, YouTube) Melbourne Recital Centre Elbow (Wikipedia) The Corner Hotel, Melbourne David Gilmour (Wikipedia) Jack White (Wikipedia) This is just cool: What do tree rings sound like when played like a record? (IFL) Corrections Higher pitches are detected by ear hair cells with shorter hair bundles, lower pitches by hair cells with taller cell bundles...plus a random aside, apparently chickens can regrow damaged ear hairs! (Science Daily) Sonar is actually sound waves, not electromagnetic (Wikipedia) Cheeky review? (If we may be so bold) It'd be amazing if you gave us a short review...it'll make us easier to find in iTunes: Click here for instructions. You're the best! We owe you a free hug and/or a glass of wine from our cellar

How do planes fly? How do planes fly? Backs up what Johnny was saying about how wings work (Explain That Stuff!) The physics of sailing (UNSW) You can sail into the wind, but not exactly upwind - The physics of sailing (Physics Buzz blog, Physics Central) The hipster PDA: Merlin Mann's index card system (43 Folders) What is turbulence? From a fluid dynamics perspective (Wikipedia) Turbulence - everything you need to know (Patrick Smith's Ask the Pilot) Air turbulence - how dangerous is it? (livescience) What is tacking in sailing? (Wikipedia) What is tacking in sailing? (School of Sailing) The spice routes were the 'maritime silk road' (UNESCO) The search for new sea routes for the spice trade really kicked off in the 1500s (Encyclopaedia Britannica) Trade routes followed the 'trade winds' (Wikipedia) Prevailing winds blow from a certain direction over a point on the Earth's surface (Wikipedia) How do planes fly upside down? (Physics StackExchange) Flying upside down (Air & Space, Smithsonian) Wing flaps & slats (NASA) More flaps: Wing flaps for lift augmentation in aircraft (Decoded Science) What is drag? (NASA) Aerodynamics, an introduction - including a description of drag (Explain That Stuff!) Four forces affect things that fly: weight, lift, thrust, drag (Smithsonian National Air & Space Museum) Powered aircraft (Wikipedia) Unpowered aircraft (Wikipedia) Unpowered flight (Wikipedia) Flight (Wikipedia) What is autorotation? (Wikipedia) The Gimli glider: Air Canada plane that glided to land on a race track after running out of fuel in 1983 (Wikipedia) The Gimli glider was recently sold...after a further 25 years of service! (Financial Post) Video of an aborted landing just a few feet off the ground - also shows how much wings flex (YouTube) Pilots have detailed checklists (Patrick Smith's Ask the Pilot) How a glider works...Remember the space shuttle? It was a glider! (NASA) Birds, thermals & soaring flight (Aerospaceweb.org) Birds of prey riding thermals (YouTube) Plane wings are pretty flexible (Wired) Turbulence & why you should buckle up (Civil Aviation Safety Authority) Headwinds & tailwinds (Wikipedia) Headwinds allow take off & landing on shorter amounts of runway (United Hub) Airport design & naming runways (NASA) Runway numbers explained (Atlas Obscura, YouTube) Airspeed versus ground speed (Aerospaceweb.org) Planes can levitate on the ground if it's windy enough (YouTube) How does a wind sock work? A pilot explains (YouTube) What is a jumbo jet? A Boeing 747 (Wikipedia) Flaps during takeoff & landing (Wikipedia) Thrust reversal (Wikipedia) Thrust reversal (Purdue University) Stopping the A380 (Air & Space Smithsonian) Rolls Royce jet engines (Rolls Royce) Picture: A Boeing 717 with 'petal' thrust reversal on engines (CQ Plane Spotting) A database of paper aeroplanes with folding instructions (Fold'NFly) What do winglets do? i.e. The flipped up bits on the end of plane wings (NASA) Winglets or 'wing tip devices' (Wikipedia) Why do golf balls have dimples? (livescience) Shark scales create tiny whirlpools for speedy swimming (livescience) Proper scientific paper: Shark-skin surfaces for fluid-drag reduction in turbulent flow (The Royal Society) Bros had flipped up fringes like winglets (Old School Pannini) What is a jet stream? (livescience) What is drift diving? (PADI) Flight times between New York & London slashed by jet stream's power (ABC Australia) The Flat Earth Society What is a 'great circle' & how are they used for flight routes? (AeroSavvy) Air distance & flight time calculator (Great Circle Mapper) There are flight routes over the North Pole, but probably not Antarctica (Wikipedia) Fonzie cool (YouTube) Chesley Sullenberger: the super cool pilot that landed the plane on the Hudson River (Wikipedia) US Airways flight 1549 that landed on the Hudson River (Wikipedia) British Airways flight 9 whose engines stalled in an ash cloud in 1982: Lucy was exaggerating slightly, it wasn't a 2-hour emergency...but still pretty serious (Wikipedia) Flying or driving: Which Is safer? (Science 2.0) Flying, driving or trains: Which Is safer? (AirlineReporter) Smithsonian National Air & Space Museum The Wright Brothers 'invented' aviation in 1903 (The Wright Bros) The Apollo Lunar Module landed on the moon in 1969 (Wikipedia) Sydney to London in 4 hours just got another step closer (News.com.au) Australian scientists just successfully launched a jet which could fly from Sydney to London in 2 hours (Business Insider Australia) The Concorde supersonic jet (Wikipedia) Concorde: 40 fascinating facts (The Telegraph) Corrections Sorry Lucy, you mixed up Newton's 3rd & 1st laws: The 3rd law is relevant to plane wings...'equal & opposite reaction' (NASA) Sorry Johnny, helicopters CAN fly without power via 'autorotation' (copters.com) Cheeky review? (If we may be so bold) It'd be amazing if you gave us a short review...it'll make us easier to find in iTunes: Click here for instructions. You're the best! We owe you a free hug and/or a glass of wine from our cellar

What is energy and how does it move around? What is E = mc^2 in simple terms (American Museum of Natural History) What is E = mc^2 in simple terms (Universe Today) What is E = mc^2 in simple terms (YouTube) Werner Heisenberg (Nobelprize.org) Robert Openheimer (Atomic Archive) "Doc" Brown (Wikipedia) Back to the Future (Wikipedia) The speed of light: 3x10^8 metres per second (Wikipedia) The size of Wales (Wikipedia) The size of Belgium (Wikipedia) Basic principles of energy (University of Illinois) What is energy? (Wikipedia) Potential & kinetic energy (BBC) Different types of energy (BBC) What is sound energy? (Explain That Stuff!) What is heat energy (Science Learning) All the matter & energy in the universe was created in the Big Bang (Exploratorium, CERN) All the matter & energy in the universe was created in the Big Bang (The Physics of the Universe) Best guess...the universe is between 13-14 billion years old (HubbleSite) First law of thermodynamics: Energy in a closed system cannot be gained or lost, just transferred (livescience) First law of thermodynamics - more techy explanation (NASA) Could loads of wind turbines affect local systems? Who knows...here's some potential answers (Earth Science Stack Exchange) Solar energy that reaches the Earth's surface is called 'insolation' (Wikipedia) The amount of solar energy reaching Earth is huge (The Electronic Universe, University of Oregon) Solar irradiation map of the world (Wikipedia) US town rejects solar farm amid worries it would "suck up all the energy from the sun" (Science Alert) Where does the sun's energy come from? (NASA) The sun's energy will run out in about 5 billion years (Phys.org) Simple photosynthesis (Photosynthesis Education) Chemical energy is stored in the bonds of atoms & molecules, plus a big list of types of energy (Quizlet) Muscles & liver store carbohydrate as glycogen until needed for energy (Discovery Learning) How does a microphone work? Simple conversion of sound energy (Explain That Stuff!) How long would you have to yell to heat a cup of coffee? (Physics Central) Old lights bulbs used to give off ~90% of their energy as heat, not light (Energy.gov) What happens when you clap your hands...in space? (Reddit) The motion of atoms & molecules creates heat or thermal energy (EDinformatics) What is a quantum? (Wikipedia) A photon is a quantum of light (Wikipedia) When did we figure out what energy is? (Wikipedia) Light is energy...& photons of light can have different amounts of energy (Johns Hopkins University) A photon's energy determines where it sits on the electromagnetic spectrum (NASA) How do we transfer energy into speech? The acoustic theory of speech production (Yale University) How do we hear? (Dangerous Decibels) No sound in a vacuum, no sound in space (Physics Central) The speed of sound in different media (HyperPhysics, Georgia State University) What is an echo? (Wikipedia) The old 'tree falling in the woods' conundrum...from a quantum theory perspective (Oxford University Press Blog) Sound is a wave (Physics Hypertextbook) How candles burn (National Candle Association) Richard Feynman's wonderful words: What is fire? Plants come from air not dirt. Wood is stored sunlight (YouTube) Burning fossil fuels releases ancient atoms (Wikipedia) Photosynthesis: Plants grab the carbon from carbon dioxide & we get some oxygen (Wikipedia) Humans exhale ~4% to 5.3% carbon dioxide (Wikipedia) Humans breathe out a fair bit of carbon dioxide - maybe we should stop (Small-M) Carbon dioxide is a greenhouse gas (Wikipedia) Carbon capture & sequestering technologies (MIT) All the jiggling: How heat energy is transferred (xaktly) Temperature is essentially a measure of movement (New York University) Temperature is essentially a measure of movement (HyperPhysics, Georgia State University) What is absolute zero? (Encyclopaedia Britannica) Why can't we get down to absolute zero? (io9) The Large Hadron Collider & absolute zero (Encyclopaedia Britannica) The Large Hadron Collider is colder than deep space (BBC) The temperature in outer space is about 2.7 Kelvin (NASA) How does a vacuum flask work? With a vacuum of course (Explain That Stuff!) How does heat move? A simple description of radiation, conduction & convection (Qualitative Reasoning Group, Northwestern University) Conduction & convection in the home (BBC) Calories are a unit of energy or heat (Encyclopaedia Britannica) Tartan Thermos (Etsy) Curried egg sandwiches recipe (Keen's, McCormick) Apparently crusts won't make your beard curly...but they may have more nutrients than the fluffy bit (How Stuff Works) Insulated glazing (Wikipedia) Vacuum-insulated glass (Windows for high-performance commercial buildings) The vacuum flask or Thermos: Invented by a Scot - uses include storing coffee, rocket fuel & liquid nitrogen (Wikipedia) Thermos® appears to be a registered trademark...thought we'd mention that for legal purposes (Thermos.com) Sir James Dyson (James Dyson Foundation) Elon Musk (Forbes) Outer space isn't very dense - sometimes 1 atom per cubic metre (hypertextbook) Empty space: the birthplace of stars (NASA) Hypothermia: How long can someone survive in frigid water? (Scientific American) Water conducts heat ~25 times more efficiently than air (Wikipedia) Speed of sound in water is ~1,484 metres per second (Wikipedia) Cold people & hot people: Why do some people feel the cold more than others (IFL Science!) Why do some people never feel cold while others never get warm? (Medical News Today) Michelle Bridges Kentucky Fried Chicken Deepak Chopra July 16 1945: The first atomic test (History.com) Original defence memo from a General who was at the first atomic test (PBS) What happens in an atomic bomb is the same as what happens in the sun (NorthWest Research Associates) The sun is ~93 million miles from Earth (Space.com) Little old Pluto gets about 1/900th the sunlight that we do (Project Pluto) The Kardashev scale: Type I, II & III civilisations (Wikipedia) The physics of extraterrestrial civilisations (Michio Kaku) What is a Dyson Sphere? A theoretical way to capture all the energy from a star (EarthSky) The Star Trek proto-post scarcity economy (Medium) Thankfully, modern nuclear bombs are more efficient than the olden days (GlobalResearch) The fission of 1kg of plutonium-239 can explode with the power equivalent to 20,000 tonnes of TNT (Materials World) E = mc^2 for 1kg of wood is HUGE (E = mc2 Explained) What is cold fusion? (Wikipedia) 5 reasons why cold fusion is bunk (Seeker) What is perpetual motion? More bunk (Wikipedia) The "never die" Orbo Power Cube battery that was on display in a Dublin pub...hmmm (E-Cat World) Animation: How a wind turbine works (Energy.gov) Newton's Cradle (balls) (YouTube) The Flat Earth Society Cheeky review? (If we may be so bold) It'd be amazing if you gave us a short review...it'll make us easier to find in iTunes: Click here for instructions. You're the best! We owe you a free hug and/or a glass of wine from our cellar