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  • 00:01

    While there are many strange unexplainable  things in the universe there's one that's  

  • 00:06

    almost too fascinating to be real not  only is this one of the longest standing  

  • 00:11

    mysteries of the universe it also holds  key answers to the origins of the universe  

  • 00:16

    and why everything is the way that it  is welcome back to fact nominal and  

  • 00:21

    for today's video we take a deep dive into  matter's mysterious bizarre twin, antimatter

  • 00:31

    it all began with the famous formula e equals  mc squared by Albert Einstein in his theory of  

  • 00:38

    relativity explaining in detail the relationship  between space and time and between energy and mass  

  • 00:45

    according to this equation energy and mass are  interchangeable mass can therefore be transformed  

  • 00:51

    into energy or energy into mass in the 1920s  Irwin Schrodinger and Werner Heisenberg brought  

  • 00:58

    their new theory of quantum physics to the stage  building upon Max Planck's earlier quantum theory  

  • 01:04

    the only problem however was that their theory  was not relativistic their quantum description  

  • 01:10

    worked for particles that moved slowly but not  those at high velocities then in 1928 Paul Dirac  

  • 01:18

    a famous British physicist became the first to  find an equation that united quantum physics with  

  • 01:24

    the theory of relativity to describe the behavior  of an electron moving at a relatively high speed  

  • 01:31

    but his equation posed a very interesting problem  just as the formula 2x equals 4 can have two  

  • 01:38

    possible outcomes that is x equals two or x equals  negative two dirac's equation could also have two  

  • 01:46

    solutions one for an electron with positive energy  and one for an electron with negative energy  

  • 01:54

    this is where Paul Dirac arrived at his conclusion  for every particle there exists a corresponding  

  • 02:00

    anti-particle that exactly matches the particle  but with an opposite charge meanwhile in 1932  

  • 02:08

    american physicist carl anderson after a year-long  study of particles using a cloud chamber announced  

  • 02:14

    the discovery of the positive electron which of  course was strange since electrons up until then  

  • 02:20

    have been well known to hold a negative  charge thus was born the positron or positive  

  • 02:27

    electron this demonstration that the positron and  electron were exact opposites of each other also  

  • 02:34

    further provided proof and experimental  validation to dirac's theory what paul  

  • 02:39

    dirac predicted and what carl anderson later  discovered is what we know today as antimatter

  • 02:49

    antimatter is more than just matter with an  opposite electric charge though at times it  

  • 02:54

    may sound like something straight out of science  fiction antimatter was created right along with  

  • 02:59

    matter after the big bang in fact antimatter is  also right at the heart of the mystery about why  

  • 03:05

    the universe we live in exists at all initially  after the big bang only energy existed but as the  

  • 03:12

    universe began to cool down and expand that's  when matter and antimatter were both produced  

  • 03:18

    and in equal amounts according to theory  scientific experiments and measurements have  

  • 03:24

    shown that particles of both matter and antimatter  are found to behave identically in theory they  

  • 03:30

    both should have completely annihilated each  other at the very beginning leaving the cosmos  

  • 03:35

    full of light and nothing else this leads to  the possibility that there's perhaps at least  

  • 03:41

    a small excess of matter over antimatter the fact  that we exist at all is a very good case for that  

  • 03:48

    there are many theories out there about why this  is like the one proposed by Russian physicist  

  • 03:54

    Andrei Sakharov stating that a small asymmetry  in the decay of matter and antimatter particles  

  • 04:00

    may have produced a surplus of matter over  antimatter why exactly there's more matter  

  • 04:06

    than antimatter is still a huge mystery  and calls for further study of antimatter

  • 04:14

    there were many who didn't believe dirac's  equation and predictions until they were proven  

  • 04:20

    and fast forward to today antimatter is being  produced in particle accelerators like the large  

  • 04:25

    hadron collider in Switzerland in the universe  there's also already some naturally occurring  

  • 04:31

    antimatter the big mystery surrounding antimatter  ever since its discovery as far as scientists are  

  • 04:37

    concerned is why there isn't more of it in the  universe and if there is then where the heck is  

  • 04:43

    it that's exactly why scientists are trying to  constantly cook up the perfect recipe for making  

  • 04:49

    antimatter in the lab so as to be able to study  and observe it let's take an example if we examine  

  • 04:57

    atoms of matter we find electrons whirling around  a central nucleus consider hydrogen which consists  

  • 05:04

    of a single electron carrying negative electric  charge and a nucleus made of a single proton which  

  • 05:10

    carries the positive charge the opposite charges  attract each other thus keeping the atom together  

  • 05:17

    when it comes to an atom of anti-hydrogen  it would be the same concept except here  

  • 05:23

    the electric charges would be reversed you'll  find a central negatively charged antiproton  

  • 05:29

    and positively charged anti-electron better known  as a positron and the opposite charges here again  

  • 05:36

    attract and keep this anti-atom together but  making antimatter is no easy task after all how do  

  • 05:43

    you keep a substance that literally and violently  destroys almost anything it touches it would  

  • 05:49

    require a good vacuum to ensure the antimatter  doesn't inadvertently bump into a stray atom in  

  • 05:55

    the air and also keep it away from the sides of  whatever you're using as the container since it's  

  • 06:01

    made of matter also the solution to this is  a magnetic bottle that can use electric and  

  • 06:07

    magnetic fields to trap the antimatter and hold  it suspended in place the real challenge however  

  • 06:13

    is making and storing lots of these atoms getting  a positron and an anti-proton to come near enough  

  • 06:20

    to each other that their electrical attraction  at least has a chance to combine and form an  

  • 06:26

    atom before they annihilate any ordinary matter  is another task altogether the european center  

  • 06:33

    for nuclear research or cern is one such place  that's dedicated to the study of these anti-atoms  

  • 06:40

    using a machine called the antiproton decelerator  they do just that by slowing the antiprotons down  

  • 06:46

    while the electric and magnetic forces gather them  together with some positrons the alpha experiment  

  • 06:53

    conducted at cern even managed to make atoms  of antihydrogen and store them for 17 minutes  

  • 07:00

    and change the magnetic orientation of the  anti-atoms by shining microwaves on them to show  

  • 07:06

    more detailed measurements of their properties  that may not sound like a huge achievement but  

  • 07:12

    considering how extremely difficult it is  to even make a single atom of antimatter  

  • 07:18

    it's actually quite impressive when scientists  study these atoms what they're really looking at  

  • 07:24

    is the atomic spectra which can be understood  as a pattern of colluded lines much like a bar  

  • 07:31

    code the behavior of the positron in an atom of  antihydrogen is said to be the same as a normal  

  • 07:38

    electron in hydrogen by that logic their atomic  barcodes should be the same if however there's  

  • 07:45

    any difference detected it'll enable us  to find out the actual difference between  

  • 07:50

    matter and antimatter and finally solve  the enigma of the asymmetry between the two

  • 08:00

    now that we know how to make antimatter the  question is do we really need it or to put  

  • 08:06

    it another way does antimatter really matter one  of the most significant uses of antimatter that  

  • 08:13

    we can see is for making bombs sound deadly well  it is when it comes to a nuclear bomb where the  

  • 08:20

    atoms are split it converts only a few percent  of its mass into energy however in the case  

  • 08:27

    of matter and antimatter annihilation as in an  anti-matter bomb almost the entire mass would be  

  • 08:33

    converted into energy scientists have said that  dropping one gram of antimatter weighing as little  

  • 08:40

    as a mere paperclip would release more energy than  the hiroshima bomb which is both fascinating and  

  • 08:47

    terrifying all at the same time the good news is  that producing antimatter requires an enormous  

  • 08:54

    amount of energy to begin with and  given our current state of technology  

  • 08:58

    it would take millions of years of production time  another place antimatter is garnering attention is  

  • 09:05

    actually in space travel it's no secret that  scientists and researchers have long been trying  

  • 09:11

    to think of ways to achieve near light speed  travel just imagine what as little as a few  

  • 09:17

    micrograms of antimatter could do to help  us achieve the energy levels required for  

  • 09:23

    relativistic space travel it would completely  revolutionize human space exploration and trips  

  • 09:29

    to whether galaxies and star systems wouldn't seem  so far-fetched after all however as we're not yet  

  • 09:36

    able to stabilize and store antimatter in order  to study it long enough we haven't quite gotten  

  • 09:42

    to that point yet and it might take generations  for us to achieve any significant progress

  • 09:51

    in a more recent observation a pulsar about  1600 light years away from earth is proving to  

  • 09:57

    be an exciting new source of study PSR J 2030+4415  scientists spotted an absolute colossus of a beam  

  • 10:08

    erupting right from the heart of the pulsar  but what's that got to do with antimatter  

  • 10:14

    well this is no ordinary beam it's packed with  matter and antimatter spanning 40 trillion miles  

  • 10:21

    or 64 trillion kilometers from end to end that's  wide enough to eclipse our entire solar system  

  • 10:30

    new observations using NASA's Chandra  x-ray observatory show that the  

  • 10:34

    ginormous beam is full of high-energy charged  particles including electrons and positrons  

  • 10:42

    normally pulsars produce these kinds of particles  all the time but what's interesting here is that  

  • 10:48

    PSR j2030 4415 is leaking them out into deep space  forming a massive beam-like structure a positron  

  • 10:57

    fountain like this could actually be the source of  all the positrons scientists are able to see today  

  • 11:03

    as the ones formed earlier have more than likely  collided with normal matter by now annihilating  

  • 11:09

    both in the process studying a massive structure  of this kind could actually help give us  

  • 11:15

    more clues and insights on antimatter and  may even possibly be the source of this  

  • 11:20

    bizarre and almost surreal phenomenon anyway  that's all for today what are your thoughts on  

  • 11:28

    antimatter let us know in the comments and don't  forget to smash that like button and subscribe  

  • 11:34

    to the channel so you don't miss another video  thanks for watching and we'll see you next time

All

The example sentences of NOMINAL in videos (15 in total of 117)

so adverb now adverb we personal pronoun can modal see verb, base form that preposition or subordinating conjunction an determiner increase noun, singular or mass in preposition or subordinating conjunction the determiner growth noun, singular or mass rate noun, singular or mass of preposition or subordinating conjunction nominal adjective gdp proper noun, singular - -
and coordinating conjunction why wh-adverb everything noun, singular or mass is verb, 3rd person singular present the determiner way noun, singular or mass that preposition or subordinating conjunction it personal pronoun is verb, 3rd person singular present welcome adjective back adverb to to fact noun, singular or mass nominal adjective and coordinating conjunction
the determiner mode noun, singular or mass is verb, 3rd person singular present the determiner only adverb measure noun, singular or mass of preposition or subordinating conjunction central adjective tendency noun, singular or mass you personal pronoun can modal use verb, base form for preposition or subordinating conjunction nominal adjective data noun, plural .
britain proper noun, singular determined verb, past tense that preposition or subordinating conjunction 50 cardinal number % noun, singular or mass of preposition or subordinating conjunction the determiner german proper noun, singular legal proper noun, singular civil proper noun, singular services proper noun, singular could modal be verb, base form staffed verb, past participle by preposition or subordinating conjunction nominal adjective
to to the determiner west noun, singular or mass , they personal pronoun faced verb, past tense two cardinal number rival adjective empires noun, plural proper noun, singular first adjective the determiner seleucids proper noun, singular , their possessive pronoun nominal adjective overlords noun, plural ;
you personal pronoun can modal find verb, base form the determiner nominal adjective impedance noun, singular or mass of preposition or subordinating conjunction your possessive pronoun speakers noun, plural on preposition or subordinating conjunction the determiner manufacturer noun, singular or mass 's possessive ending website noun, singular or mass within preposition or subordinating conjunction the determiner
when wh-adverb your possessive pronoun nominal adjective income noun, singular or mass - - the determiner actual adjective current adjective dollar noun, singular or mass amount noun, singular or mass - - is verb, 3rd person singular present adjusted verb, past participle for preposition or subordinating conjunction any determiner price noun, singular or mass
say verb, non-3rd person singular present about preposition or subordinating conjunction it personal pronoun right adverb now adverb is verb, 3rd person singular present that preposition or subordinating conjunction spss proper noun, singular , in preposition or subordinating conjunction spss proper noun, singular , nominal adjective means noun, plural nominal adjective , ordinal adjective means noun, plural ordinal adjective ,
this determiner remained verb, past tense a determiner nominal adjective issue noun, singular or mass for preposition or subordinating conjunction most adjective, superlative of preposition or subordinating conjunction the determiner twentieth adjective century noun, singular or mass , but coordinating conjunction it personal pronoun all determiner changed verb, past participle
more adverb, comparative likely adjective to to take verb, base form effect noun, singular or mass in preposition or subordinating conjunction summer noun, singular or mass , meaning noun, singular or mass that preposition or subordinating conjunction their possessive pronoun nominal adjective peaks noun, plural strongly adverb coincide verb, non-3rd person singular present .
gender proper noun, singular is verb, 3rd person singular present an determiner excellent adjective example noun, singular or mass of preposition or subordinating conjunction the determiner use noun, singular or mass of preposition or subordinating conjunction a determiner nominal adjective scale noun, singular or mass because preposition or subordinating conjunction the determiner group noun, singular or mass
nominal proper noun, singular sounds noun, plural like preposition or subordinating conjunction name noun, singular or mass so preposition or subordinating conjunction it personal pronoun is verb, 3rd person singular present easy adjective to to remember verb, base form that preposition or subordinating conjunction at preposition or subordinating conjunction a determiner nominal adjective level verb, base form you personal pronoun are verb, non-3rd person singular present simply adverb
the determiner rich adjective coastal adjective region noun, singular or mass cities noun, plural of preposition or subordinating conjunction beijing proper noun, singular and coordinating conjunction shanghai proper noun, singular have verb, non-3rd person singular present a determiner far adverb higher adverb, comparative nominal adjective per preposition or subordinating conjunction
the determiner nominal adjective value noun, singular or mass of preposition or subordinating conjunction apples noun, plural has verb, 3rd person singular present increased verb, past participle because preposition or subordinating conjunction there existential there 's verb, 3rd person singular present more adjective, comparative of preposition or subordinating conjunction them personal pronoun , but coordinating conjunction the determiner actual adjective
be verb, base form nominal adjective achievements noun, plural to to ensure verb, base form her possessive pronoun and coordinating conjunction other adjective ladies noun, plural a determiner good adjective start noun, singular or mass in preposition or subordinating conjunction life noun, singular or mass with preposition or subordinating conjunction

Use "nominal" in a sentence | "nominal" example sentences

How to use "nominal" in a sentence?

  • A name, it has more than nominal worth, And belongs to good or bad luck at birth
    -Thomas Hood-
  • What really matters from the point of view of social capital and civic engagement is not merely nominal membership, but active and involved membership.
    -Robert D. Putnam-
  • The saddest thing one meets is a nominal Christian.
    -Amy Carmichael-
  • Balancing a nominal budget will solve nothing, and attempting to achieve such a spurious balance will produce much mischief.
    -William Vickrey-
  • Hard to find anything lovelier than a tree. They grow at right angles to a tangent of the nominal sphere of the Earth.
    -Bill Nye-
  • The nominal budget is a poor indicator of the impact of government outlays and revenues.
    -William Vickrey-
  • Nominal damages are in effect, only a peg to hang costs on.
    -William Henry Maule-

Definition and meaning of NOMINAL

What does "nominal mean?"

/ˈnämən(ə)l/

adjective
existing in name only.

What are synonyms of "nominal"?
Some common synonyms of "nominal" are:
  • titular,
  • formal,
  • official,
  • ceremonial,
  • theoretical,
  • purported,
  • supposed,
  • ostensible,
  • self-styled,
  • so-called,
  • would-be,
  • token,
  • symbolic,

You can find detailed definitions of them on this page.

What are antonyms of "nominal"?
Some common antonyms of "nominal" are:
  • real,
  • considerable,
  • substantial,

You can find detailed definitions of them on this page.