how to count infinity
Bookmarked 718 weeks ago
quotsome infinities are bigger than other infinitiesquot - hazel grace lancaster in quotthe fault in our starsquot by john green minutephysics is now on google - http:bitlyqzewc6 and facebook - http:facebookcomminutephysicsand twitter - minutephysicsminute physics provides an energetic and entertaining view of old and new problems in physics -- all in a minutemusic by nathaniel schroederthanks to perimeter institute for supporthttp:wwwperimeterinstituteca

smbc physics: why are stones round feat zach weiner
Bookmarked 718 weeks ago
zach weiner of smbc comics is guest illustrator on minutephysics http:wwwsmbc-comicscomwhy are some stones round and others flat tweet it - http:bitlyxnrara facebook it - http:onfbmexccsrl minutephysics is now on google - http:bitlyqzewc6 and facebook - http:facebookcomminutephysicsand twitter - minutephysicsminute physics provides an energetic and entertaining view of old and new problems in physics -- all in a minutemusic by nathaniel schroedernew album -- http:juliansaporitibandcampcomalbumlusitaniayoutube: http:bitlypakjle

how far is a second
Bookmarked 725 weeks ago
the moon may be 13 light-seconds away but why on earth do we measure distances using timeminutephysics is now on google - http:bitlyqzewc6 and facebook - http:facebookcomminutephysicsand twitter - minutephysicsminute physics provides an energetic and entertaining view of old and new problems in physics -- all in a minutemusic by nathaniel schroedernew album -- http:juliansaporitibandcampcomalbumlusitaniayoutube: http:bitlypakjlethanks to ross diener for contributions and to perimeter institute for support

optical lattice atomic clock accuracy hits a 100 quadrillionth of a second diginfo
Bookmarked 757 weeks ago
diginfo tv - http:diginfotv1882011the university of tokyooptical lattice clock

what if the earth were hollow
Bookmarked 705 weeks ago
link to keep watching over on vsauce039s channel right here: http:wwwyoutubecomwatchv=hyf6av21x5cwhat if there were a tunnel through the middle of the earth and you jumped inalso explore a map of the big bang http:wwwbigbangregistrycomminutephysics is on google - http:bitlyqzewc6 and facebook - http:facebookcomminutephysicsand twitter - minutephysicsminute physics provides an energetic and entertaining view of old and new problems in physics -- all in a minutemusic by nathaniel schroederthanks to nima doroud for contributions and to perimeter institute for supporthttp:wwwperimeterinstituteca

proof without words: the circle
Bookmarked 718 weeks ago
prove r using only beads and a ruleri first saw this proof in an article by russell jay hendel dowling college: http:bitlylqlwqwminutephysics is now on google - http:bitlyqzewc6 and facebook - http:facebookcomminutephysicsand twitter - minutephysicsminute physics provides an energetic and entertaining view of old and new problems in physics -- all in a minutemusic by nathaniel schroederthanks to nima doroud for contributions and to perimeter institute for supporthttp:wwwperimeterinstituteca

why the solar system can exist
Bookmarked 722 weeks ago
if gravity is so attractive why doesn039t the earth just crash into the sun or the moon into the earth the answer: stable orbitshyperbolic funnel video: http:bitlyr5xhngminutephysics is now on google - http:bitlyqzewc6 and facebook - http:facebookcomminutephysicsand twitter - minutephysicsminute physics provides an energetic and entertaining view of old and new problems in physics -- all in a minutemusic by nathaniel schroederthanks to perimeter institute for supporthttp:wwwperimeterinstituteca

einstein and the special theory of relativity
Bookmarked 728 weeks ago
how einstein ampamp others discovered special relativitypi day 314 is albert einstein039s birthday to celebrate we039ll explain 4 of his most groundbreaking papers from 1905 when he was just 26 years oldminutephysics is now on google - http:bitlyqzewc6 and facebook - http:facebookcomminutephysicsand twitter - minutephysicsminute physics provides an energetic and entertaining view of old and new problems in physics -- all in a minutemusic by nathaniel schroedernew album -- http:juliansaporitibandcampcomalbumlusitaniayoutube: http:bitlypakjlethanks to nima doroud and alex yale for contributions and to perimeter institute for support

einstein039s proof of e=mc
Bookmarked 727 weeks ago
ever wonder how einstein proved e=mc this is howpi day 314 is albert einstein039s birthday to celebrate we039ll explain 4 of his most groundbreaking papers from 1905 when he was just 26 years oldminutephysics is now on google - http:bitlyqzewc6 and facebook - http:facebookcomminutephysicsand twitter - minutephysicsminute physics provides an energetic and entertaining view of old and new problems in physics -- all in a minutemusic by nathaniel schroedernew album -- http:juliansaporitibandcampcomalbumlusitaniayoutube: http:bitlypakjlethanks to nima doroud and alex yale for contributions and to perimeter institute for support

ye olde debunking
Bookmarked 724 weeks ago
have you ever wondered where quotye oldequot spelling comes from today we unravel this thorny linguistic issueminutephysics is now on google - http:bitlyqzewc6 and facebook - http:facebookcomminutephysicsand twitter - minutephysicsminute physics provides an energetic and entertaining view of old and new problems in physics -- all in a minutemusic by nathaniel schroederthanks to perimeter institute for supporthttp:wwwperimeterinstituteca

the largest black holes in the universe
Bookmarked 716 weeks ago
watch commercial free on the spacerip app available on the apple and google play stores how big can they get what039s the largest so far detected where does an 18 billion solar mass black hole hidewe039ve never seen them directly yet we know they are there lurking within dense star clusters or wandering the dust lanes of the galaxy where they prey on stars or swallow planets wholeour milky way may harbor millions of these black holes the ultra dense remnants of dead starsbut now in the universe far beyond our galaxy there039s evidence of something even more ominous a breed of black holes that have reached incomprehensible size and destructive powerit has taken a new era in astronomy to find them high-tech instruments in space tuned to sense high-energy forms of light -- x-rays and gamma rays -- that are invisible to our eyes new precision telescopes equipped with technologies that allow them to cancel out the blurring effects of the atmosphereand see to the far reaches of the universepeering into distant galaxies astronomers are now finding evidence that space and time can be shattered by eruptions so vast they boggle the mindwe are just beginning to understand the impact these outbursts have had on the universe around usthat understanding recently took a leap forward a team operating at the subaru observatory atop hawaii039s mauna kea volcano looked out to one of the deepest reaches of the universe and captured a beam of light that had taken nearly 13 billion years to reach usit was a messenger from a time not long after the universe was born they focused on an object known as a quasar short for quotquasi-stellar radio sourcequotit offered a stunning surprisea tiny region in its center is so bright that astronomers believe it039s light is coming from a single object at least a billion times the mass of our sun inside this brilliant beacon space suddenly turns dark as it039s literally swallowed by a giant black hole as strange as they may seem even huge black holes like these are thought to be products of the familiar universe of stars and gravity they get their start in rare types of large stars at least ten times the mass of our sun these giants burn hot and fast and die youngthe star is a cosmic pressure-cooker in its core the crush of gravity produces such intense heat that atoms are stripped and rearranged lighter elements like hydrogen and helium fuse together to form heavier ones like calcium oxygen silicon and finally iron when enough iron accumulates in the core of the star it begins to collapse under its own weight that can send a shock wave racing outward literally blowing the star apart:a supernova at the moment the star dies if enough matter falls into its core it collapses to a point forming a black holeintense gravitational forces surround that point with a dark sphere the event horizon beyond which nothing not even light can escape that039s how an average-size black hole formswhat about a monster the size of the subaru quasarrecent discoveries about the rapid rise of these giant black holes have led theorists to rethink their view of cosmic history

mysteries of a dark universe
Bookmarked 717 weeks ago
watch this video commercial free on the spacerip app available in the apple and google play stores dark energy in full hd 1080p cosmology the study of the universe as a whole has been turned on its head by a stunning discovery that the universe is flying apart in all directions at an ever-increasing rate is the universe bursting at the seams or is nature somehow fooling usthe astronomers whose data revealed this accelerating universe have been awarded the nobel prize for physics and yet since 1998 when the discovery was first announced scientists have struggled to come to grips with a mysterious presence that now appears to control the future of the cosmos: dark energyon remote mountaintops around the world major astronomical centers hum along with state of the art digital sensors computers air conditioning infrastructure and motors to turn the giant telescopes deep in chile039s atacama desert the paranal observatory is an astronomical mecca this facility draws two megawatts of power enough for around two thousand homeswhat astronomers get for all this is photons tiny mass-less particles of light they stream in from across time and space by the trillions from nearby sources down to one or two per second from objects at the edge of the visible universein this age of precision astronomy observers have been studying the properties of these particles to find clues to how stars live and die how galaxies form how black holes grow and more but for all we039ve learned we are finding out just how much still eludes our grasp how short our efforts to understand the workings of the universe still fall a hundred years ago most astronomers believed the universe consisted of a grand disk the milky way they saw stars like our own sun moving around it amid giant regions of dust and luminous gas the overall size and shape of this quotisland universequot appeared static and unchangingthat view posed a challenge to albert einstein who sought to explore the role that gravity a dynamic force plays in the universe as a whole there is a now legendary story in which einstein tried to show why the gravity of all the stars and gas out there didn039t simply cause the universe to collapse into a heap he reasoned that there must be some repulsive force that countered gravity and held the universe uphe called this force the quotcosmological constantquot represented in his equations by the greek letter lambda it039s often referred to as a fudge factorin 1916 the idea seemed reasonable the dutch physicist willem de sitter solved einstein039s equations with a cosmological constant lending support to the idea of a static universenow enter the american astronomer vesto slipher working at the lowell observatory in arizona he examined a series of fuzzy patches in the sky called spiral nebulae what we know as galaxies he found that their light was slightly shifted in colorit039s similar to the way a siren distorts as an ambulance races past us if an object is moving toward earth the wavelength of its light is compressed making it bluer if it039s moving away the light gets stretched out making it redder 12 of the 15 nebulae that slipher examined were red-shifted a sign they are racing away from usedwin hubble a young astronomer went in for a closer look using the giant new hooker telescope in southern california he scoured the nebulae for a type of pulsating star called a cepheid the rate at which their light rises and falls is an indicator of their intrinsic brightness by measuring their apparent brightness hubble could calculate the distance to their host galaxies combining distances with redshifts he found that the farther away these spirals are the faster they are moving away from us this relationship called the hubble constant showed that the universe is not static but expandingeinstein acknowledged the breakthrough and admitted that his famous fudge factor was the greatest blunder of his career

the riddle of antimatter
Bookmarked 717 weeks ago
watch this and other space videos at http:spaceripcomin high-res 1080p explores one of the deepest mysteries about the origin of our universe according to standard theory the early moments of the universe were marked by the explosive contact between subatomic particles of opposite charge featuring short interviews with masaki hori tokyo university and jeffrey hangst aarhus universityscientists are now focusing their most powerful technologies on an effort to figure out exactly what happened our understanding of cosmic history hangs on the question: how did matter as we know it survive and what happened to its birth twin its opposite a mysterious substance known as antimatter a crew of astronauts is making its way to a launch pad at the kennedy space center in florida little noticed in the publicity surrounding the close of this storied program is the cargo bolted into endeavor039s hold it039s a science instrument that some hope will become one of the most important scientific contributions of human space flightit039s a kind of telescope though it will not return dazzling images of cosmic realms long hidden from view the distant corners of the universe or the hidden structure of black holes and exploding starsunlike the great observatories that were launched aboard the shuttle it was not named for a famous astronomer like hubble or the chandra x-ray observatorythe instrument called the alpha magnetic spectrometer or ams the promise surrounding this device is that it will enable scientists to look at the universe in a completely new way most telescopes are designed to capture photons so-called neutral particles reflected or emitted by objects such as stars or galaxies ams will capture something different: exotic particles and atoms that are endowed with an electrical charge the instrument is tuned to capture quotcosmic raysquot at high energy hurled out by supernova explosions or the turbulent regions surrounding black holes and there are high hopes that it will capture particles of antimatter from a very early time that remains shrouded in mysterythe chain of events that gave rise to the universe is described by what039s known as the standard model it039s a theory in the scientific sense in that it combines a body of observations experimental evidence and mathematical models into a consistent overall picture but this picture is not necessarily completethe universe began hot after about a billionth of a second it had cooled down enough for fundamental particles to emerge in pairs of opposite charge known as quarks and antiquarks after that came leptons and antileptons such as electrons and positrons these pairs began annihilating each othermost quark pairs were gone by the time the universe was a second old with most leptons gone a few seconds later when the dust settled so to speak a tiny amount of matter about one particle in a billion managed to survive the mass annihilation that tiny amount went on to form the universe we can know - all the light emitting gas dust stars galaxies and planets to be sure antimatter does exist in our universe today the fermi gamma ray space telescope spotted a giant plume of antimatter extending out from the center of our galaxy most likely created by the acceleration of particles around a supermassive black hole the same telescope picked up signs of antimatter created by lightning strikes in giant thunderstorms in earth039s atmosphere scientists have long known how to create antimatter artificially in physics labs - in the superhot environments created by crashing atoms together at nearly the speed of lighthere is one of the biggest and most enduring mysteries in science: why do we live in a matter-dominated universe what process caused matter to survive and antimatter to all but disappear one possibility: that large amounts of antimatter have survived down the eons alongside matterin 1928 a young physicist paul dirac wrote equations that predicted the existence of antimatter dirac showed that every type of particle has a twin exactly identical but of opposite charge as dirac saw it the electron and the positron are mirror images of each other with all the same properties they would behave in exactly the same way whether in realms of matter or antimatter it became clear though that ours is a matter universe the apollo astronauts went to the moon and back never once getting annihilated solar cosmic rays proved to be matter not antimatterit stands to reason that when the universe was more tightly packed that it would have experienced an quotannihilation catastrophequot that cleared the universe of large chunks of the stuff unless antimatter somehow became separated from its twin at birth and exists beyond our field of view scientists are left to wonder: why do we live in a matter-dominated universe

there is no quotfourthquot dimension
Bookmarked 724 weeks ago
just because there are four dimensions doesn039t mean there039s a quotfourth dimensionquot4d rubik039s cube: http:wwwsuperliminalcomcubecubehtmminutephysics is now on google - http:bitlyqzewc6 and facebook - http:facebookcomminutephysicsand twitter - minutephysicsminute physics provides an energetic and entertaining view of old and new problems in physics -- all in a minutemusic by nathaniel schroedernew album -- http:juliansaporitibandcampcomalbumlusitaniayoutube: http:bitlypakjlethanks to nima doroud and alex yale for contributions and to perimeter institute for supporthttp:wwwperimeterinstituteca

theory of everything intro
Bookmarked 731 weeks ago
a brief intro to the current theory of almost everything - the standard model of particle physics it039s like cake only universalminutephysics is now on google - http:bitlyqzewc6 and facebook - http:facebookcomminutephysicsand twitter - minutephysicsminute physics provides an energetic and entertaining view of old and new problems in physics -- all in a minutemusic by nathaniel schroedernew album -- http:juliansaporitibandcampcomalbumlusitaniayoutube: http:bitlypakjle