Tag: space time

  • Cum se unifică spațiul și timpul?  Destinul tău înșiruit pe o linie de univers.

    Cum se unifică spațiul și timpul? Destinul tău înșiruit pe o linie de univers.

    00:00:24 – Lecția de fizică nr. 14. Spațiu – timp
    00:01:00 – Spațiu și timp, separate.
    00:02:29 – Spațiu – timp.
    00:06:39 – Filozofie

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    Fizica nucleara: https://tinyurl.com/3yv3kr5r
    Fizica spațiului: https://tinyurl.com/3kc5jz95
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    algoritm:”Einstein a redefinit înțelegerea spațiului și timpului ca fiind parte a unei structuri unificate, spațiu-timp, care permite materiei și energiei să interacționeze într-un cadru cauzal. Prin analogia cu un pachet de cărți de joc și utilizarea unui model bidimensional, textul ilustrează cum spațiul și timpul pot fi reprezentate împreună, unde mișcarea unui obiect este trasată pe o linie de univers. Aceasta evidențiază că timpul și spațiul nu sunt entități separate, ci interconectate, iar dilatarea timpului și teorema lui Pitagora modificată demonstrează această unire. Formula dilatării timpului arată cum percepția timpului se modifică în funcție de mișcarea relativă, subliniind că spațiu-timpul este un continuum în care trecutul, prezentul și viitorul coexistă, punând sub semnul întrebării percepțiile noastre obișnuite despre realitate. În final, se reflectă asupra naturii călătoriei personale în spațiu-timp și se invită cititorii să mediteze asupra semnificației momentului prezent în acest cadru. Această explicație îmbină fizica cu filozofia, provocând cititorul să gândească dincolo de înțelegerile convenționale.”
    #Special Theory of Relativity, #Einstein, #Space-time, #Causality, #Time dilation, #Vectorial structure, #Pythagorean theorem, #World line, #Relativistic interval, #Light cone, #Quantum mechanics, #Physics explained, #Journey in space-time, #Quantum indeterminism, #Physics lesson,#Teoria relativității restrânse, #Einstein, #Spațiu-timp, #Cauzalitate, #Dilatarea timpului, #Structură vectorială, #Teorema lui Pitagora, #Linia de univers, #Interval relativist, #Conul de lumină, #Mecanică cuantică, #Fizică povestită, #Călătorie în spațiu-timp, #Indeterminism cuantic, #Lecție de fizică

  • The Deer Illusion – Time Dilation Explained

    The Deer Illusion – Time Dilation Explained

    This illusion tricks your brain into slowing down time. And it can help explain REAL time dilation, thanks to the constant speed of light.

    “How To Travel to Another Galaxy” will be out next week––subscribe so you won’t miss it! https://bit.ly/2o2WYxD

    PRODUCTION CREDITS

    Host, Producer: Greg Kestin
    Filming: Greg Kestin
    Research, Writing: Greg Kestin, Samia Bouzid
    Editing, Animating: Samia Bouzid, Lauren Liebhaber
    Editorial Input from: Julia Cort, Ari Daniel
    Special thanks: Entire NOVA team
    From the producers of PBS NOVA © WGBH Educational Foundation Funding provided by FQXi Music provided by APM

  • How Much Does a Thought Weigh?

    How Much Does a Thought Weigh?

    How Much Does a Thought Weigh? a.) As much as an electron
    b.) As much as a water molecule
    c.) As much as a mosquito

    Subscribe on YouTube: https://www.youtube.com/WhatThePhysics?sub_confirmation=1

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    SCIENTIFIC NOTES:
    * The relationship between information and energy comes from Landauer’s Principle, which connects the erasure of information and energy. But, more generally changes in information (e.g. recording information) are related to changes in energy. I will talk more about this in a future episode about the physics of memory, and why you will forget everything you ever knew! https://en.wikipedia.org/wiki/Landauer%27s_principle

    * The numbers calculated in this video give a lower limit on the energy to record a particular amount of information, but to create a more permanent storage of information would require more energy.

    * Retina display resolution, as it’s name implies, is similar to the eye’s resolution.

    CREDITS:

    Host, Producer: Greg Kestin

    Researcher: Samia Bouzid

    Writer:
    Samia Bouzid
    Greg Kestin

    Animation & Compositing:
    Danielle Gustitus
    Greg Kestin

    Contributing Writer:
    Lissy Herman

    Scientific Consultants:
    Frank Haist
    Murti Salapaka

    Filming, Writing, & Editing Contributions from:
    Samia Bouzid
    David Goodliffe
    Brian Kantor

    Guest Appearances:
    Lindsey Chou
    Ana Aceves
    Drew Gannon

    Editorial Input form:
    Julia Cort
    Anna Rothschild

    Special thanks:
    Ari Daniel
    Allison Eck
    Fernando Becerra
    Gil Kaplan
    Eric Brass
    Lauren Miller
    And the entire NOVA team

    From the producers of PBS NOVA
    © WGBH Educational Foundation

    Funding provided by FQXi

    Music provided by APM
    Sound effects: Freesound.org
    Neuron & Digital Brain footage: Pond5

  • Can We Measure Consciousness?

    Can We Measure Consciousness?

    What makes a brain or machine conscious? Will robots become more conscious than we are? One theory, which can actually calculate consciousness, is beginning to provide some answers.
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    SCIENTIFIC NOTES:
    * Simulation of animats (simulated beings) from generation to generation, showing increase of phi: http://integratedinformationtheory.org/animats.html

    * Research paper on Integrated Information Theory 3.0: http://journals.plos.org/ploscompbiol/article?id=10.1371/journal.pcbi.1003588

    * More on medical uses of IIT with EEG: http://stm.sciencemag.org/content/5/198/198ra105.short

    * More on Behavioral Zombies and Philosophical Zombies: https://en.wikipedia.org/wiki/Philosophical_zombie#Types_of_zombies

    * More on the relationship between consciousness and free will: http://www.scholarpedia.org/article/Integrated_information_theory

    CREDITS:

    Host, Writer, Producer: Greg Kestin

    Animation & Compositing: Marquee Productions & Greg Kestin

    Contributing Writer: Lissy Herman

    Scientific Consultants:
    Masafumi Oizumi
    Larissa Albantakis
    Christof Koch

    Filming, Writing, & Editing Contributions from:
    Samia Bouzid and David Goodliffe

    Image Contributions from: Drew Ganon

    Editorial Input form:
    Julia Cort
    Lauren Aguirre
    Anna Rothschild

    Special thanks:
    Ari Daniel
    Allison Eck
    Fernando Becerra
    Gil Kaplan
    Bella Solanot
    Eric Brass
    Lauren Miller
    And the entire NOVA team

    From the producers of PBS NOVA
    © WGBH Educational Foundation

    Funding provided by FQXi

    Music provided by APM
    Sound effects: Freesound.org
    Neuron & MRI footage: Pond5
    Additional footage from: Rise of the Robots, find credits at
    http://www.pbs.org/wgbh/nova/tech/rise-of-the-robots.html

  • LISA Pathfinder results

    LISA Pathfinder results

    Launched in December 2015, LISA Pathfinder travelled to its operational orbit, 1.5 million km from earth towards the Sun, where it started its scientific mission on 1 March.

    At the core of the spacecraft, two identical gold-platinum cubes, are being held in the most precise free-fall ever produced in space.

    Placing the test masses in a motion subject only to gravity is the challenging condition needed to build and operate a future space mission to observe gravitational waves. Predicted by Albert Einstein a century ago, gravitational waves are fluctuations in the fabric of space-time, which were recently detected directly for the first time by the Laser Interferometer Gravitational-Wave Observatory.

    Over the first two months of scientific operations, the LISA Pathfinder team has performed a number of experiments on the test masses to prove the feasibility of gravitational wave observation from space.

    These results are explained in this video with interviews of Paul McNamara, LISA Pathfinder Project scientist, ESA and two LISA Pathfinder Principal investigators : Rita DOLES, University of Trento and Martin Hewitson, University of Hannover.

    Read more in LISA Pathfinder exceeds expectations: http://www.esa.int/Our_Activities/Space_Science/LISA_Pathfinder_exceeds_expectations