Introduction to astrolabes: history, design and how they work.

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  • Опубліковано 10 лис 2024

КОМЕНТАРІ • 46

  • @granumuse7847
    @granumuse7847 11 місяців тому +3

    I just saw this video after 2 weeks of learning to make an astrolabe. Fascinating isn't it? 😊❤
    Great video

    • @ClimateScepticSceptic-ub2rg
      @ClimateScepticSceptic-ub2rg 7 місяців тому

      It also includes an accurate explanation of the fact that the design is based on the stereographic projection, a key idea in make the astrolabe a possible device to manufacture by the standards of the time, as it meant that it relied only on constructing straight lines and circles.

  • @venkateswarluborra7891
    @venkateswarluborra7891 13 днів тому

    excellent explanation

  • @davidh.castro2944
    @davidh.castro2944 5 місяців тому +2

    Astrolabe is a good example that the stars are still in the same. Place. They wear back in the day
    So much for and expanding universe!

  • @moontemple3027
    @moontemple3027 Рік тому +5

    Who was the inventor of this Astrolabe?

    • @goldenmishra3148
      @goldenmishra3148 10 місяців тому

      Ancient Indian Rishi

    • @davidh.castro2944
      @davidh.castro2944 2 місяці тому +1

      @@goldenmishra3148
      It’s not known
      They say a lot of diferente people created it
      But I can’t see any human figuring out the workings
      It’s. Of divine origin
      That knows the Heaven’s
      Well . Maybe from a fallen Angel or not
      You will definitely find out on your judgment day .
      I can hardly wait.
      What a wonderful day

    • @davidh.castro2944
      @davidh.castro2944 2 місяці тому +1

      @@moontemple3027 Dont know who made the first astrolobe!
      That gave the knowledge of a simple divice to make once you know how
      Its sed it has close to a1000 uses
      But they are not all difined.
      Most things are easily understude when. You have some one that knows to show you

    • @Nermeen.
      @Nermeen. 27 днів тому +1

      ​@@goldenmishra3148 Indians discovered and invented everything yeah

    • @johnwolfe7058
      @johnwolfe7058 17 днів тому

      @@goldenmishra3148 - Your blind arrogance and pride bears no bounds....

  • @corneliusdrvanderbilt822
    @corneliusdrvanderbilt822 3 роки тому +11

    Excellent Video, clear, detailed, informative and understandable. Congratulations. I am impressed. I hold a Masters in Physics/Astronomy (Astrophysics). I, really, admire the technical approach and competence of early Muslim Science: this instrument, making and using it in the 8th century ...(775 AD). It was the GPS of that day ... They managed to reach China via the Malabar Coast, Bay of Bengal, Malaysia / Indonesia to China. They sailed to the Atlantic via the Mediterranean and Indian Ocean to Madagascar. Their calculations of the night sky is very impressive. Pity al Ghazali messed it up by making Islam a fatalistic and dogmatic religion.

    • @asmrnaturecat984
      @asmrnaturecat984 Рік тому +4

      From recent studies, blaming alghazali is quite simplistic view
      The main reason of stagnants in muslim academia is due to reducing to non-arabic ruler patronizing knowledge
      The ottoman rules were pretty much militaristic and did not promote knowledge as the previous arab rulers like in spain
      Seljuks whom are turk themselves while not focus in knowledge gives much leeway to the persian in governance, hence the knowledge culture spread... Until the mongol comes
      Researching of knowledges costs tons of money, such golden age can only happen when the ruler is die-hard fan of ancient knowledge like the caliph in baghdad and amir in andalus

    • @asmrnaturecat984
      @asmrnaturecat984 Рік тому +2

      With portuguese and spain capturing every muslim ports in india and southeast asia, the flow of money and trades to egypt(the last center of muslim academics) dwindles.
      It weaken egypt economically and was captured by ottoman.
      The age of exploration add more salts to the wound of mongol invasion towards muslim economically.
      So yeah, more money means more knowledge
      There's reason why renaissance starts in italy where venice and genoese control the spice trades to europe

    • @genericuser-1
      @genericuser-1 6 місяців тому

      You had me until the last idiotic statement.

  • @gig5811
    @gig5811 7 місяців тому

    Nice geocentric instruments

  • @ClimateScepticSceptic-ub2rg
    @ClimateScepticSceptic-ub2rg 7 місяців тому

    The mathematically inclined might like to note that the azimuth circles, and almucantar circles on a latitude plate, form a coaxial system.

  • @santhoshrider7348
    @santhoshrider7348 2 роки тому +1

    Nice video!

  • @weaamabouelnour4676
    @weaamabouelnour4676 2 роки тому

    I didn't understand why the cardinal directions where inverted ,can you explain?

    • @francoisblateyron
      @francoisblateyron 2 роки тому +2

      It's a projection of the sphere on a plane, so it's like seeing the sphere from outside, not inside.

  • @markaylahfoster13
    @markaylahfoster13 2 роки тому +1

    Does anyone know who created the Astrolabe during the Renaissance?

    • @shadowspro-sundials
      @shadowspro-sundials  2 роки тому +4

      The astrolabe was created way before the Renaissance. However, it spread across Europe during the Renaissance.

    • @trr2739
      @trr2739 2 роки тому

      Al-ʻIjliyyah bint al-ʻIjliyy.

    • @orphanoforbit7588
      @orphanoforbit7588 Рік тому

      Some said it was invented/created by a woman but that theory was debunked.....or was it?

    • @dannwan8537
      @dannwan8537 Рік тому

      @@shadowspro-sundials Which country was the first to create this device?

    • @francoisblateyron
      @francoisblateyron Рік тому +1

      @@dannwan8537 Difficult to say but probably around the eastern part of Mediterranean see.

  • @beastboy3871
    @beastboy3871 Рік тому

    can someone tell about the music been played in background?

    • @francoisblateyron
      @francoisblateyron Рік тому

      You have the credit at the last slide. It is Klaus Schulze.

    • @beastboy3871
      @beastboy3871 Рік тому

      @@francoisblateyron Oh! well Thank You good Sir, for the help. I never heard such music, it's so... catchy.

  • @Bhatt_Hole
    @Bhatt_Hole 9 місяців тому

    Excellent narration!
    What a brilliant voice.

  • @johnanderson1421
    @johnanderson1421 Рік тому +2

    This has to be chatgpt!

  • @maxdecleyn
    @maxdecleyn 9 місяців тому

    this device takes account of how we process through our globes (eyes) the plane of existence.
    stop insulting their intelligence...

  • @corneliusdrvanderbilt822
    @corneliusdrvanderbilt822 3 роки тому +6

    Sorry, it is pronounced as al aster laab ٱلأَسْطُرلاب‎ ἀστρολάβος. Do you not think it is about time Americans become a little educated?

    • @saintbrush4398
      @saintbrush4398 3 роки тому +3

      Says the guy calling out a Text-To-Speech computer voice on Arabic/Greek pronounciation...

    • @corneliusdrvanderbilt822
      @corneliusdrvanderbilt822 3 роки тому +3

      @@saintbrush4398
      As it happens, I do read Arabic and Greek. I did my Greek and Latin at my school. As Science students at the University, we were required to take two, non credit, Non Science subjects. I chose Arabic / Hebrew and Comparative Religions. My parents were Atheists. I am a Non Believer.

    • @orphanoforbit7588
      @orphanoforbit7588 Рік тому

      "al aster laab" ? I`ve watched quite a few videos on this instrument now from many different sources of nationality and no one has ever mispronounced it the way you think it should be said.
      There`s an "e" on the end of the word. I can`t be bothered explaining it now but if you`re going to accuse someone of bad education, make sure you know what the fcuk you are talking about first.
      I don`t, but it doesn`t matter.....because I too am a non believer.....especially in human beings!

    • @gagatube
      @gagatube Рік тому

      That might be the Arabic name for the instrument but in English it has been called an Astrolabe since 1390. Academic consensus is the instrument is almost universally known as a "star-taker" in whatever language you prefer, deriving that from the Greek name used by the originators of the instrument, that you quoted yourself, which is romanized to 'astrolábos'.

    • @JelMain
      @JelMain Рік тому

      @@saintbrush4398 That's instant karma for my listening.