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Tag: physics
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The distance to a black hole from Earth depends on which black hole you’re talking about. Here are the most well-known ones, with accurate and simple details: 1. š³ļø Sagittarius A* (The black hole at the center of our galaxy) 2. š³ļø M87* (The first black hole ever imaged) 3. š³ļø Closest Known Black Hole…
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ā YES: Time Dilation (Forward Time Travel) š What happens: ā³ So if you: This is a kind of forward time travel ā proven by both theory and small-scale experiments (like with atomic clocks in airplanes or satellites). ā This is real and possible (in theory), though we can’t yet travel near a black hole…
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The actual shape of a black hole depends on how you’re looking at it: šµ 1. Non-Rotating Black Hole (Schwarzschild Black Hole) š 2. Rotating Black Hole (Kerr Black Hole) šļøāšØļø What We See (Shadow of a Black Hole) š· First Real Image (M87, 2019 ā Event Horizon Telescope) Would you like a visual showing…
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š 1. Observable Universe (What We Can See) š Diameter: About 93 billion light-years š§ Imagine: Youāre looking at galaxies that are so far away, you’re seeing them as they were just after the Big Bang. š 2. Entire Universe (Including Beyond What We Can See) We donāt know its true size. But most cosmologists…
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Most wonderful Properties of Light š 1. Properties of Light Light is a form of energy that travels as an electromagnetic wave but also behaves like particles (photons). Here are its key properties: ā Speed ā Reflection ā Refraction ā Diffraction ā Interference ā Polarization ā Dispersion ā Absorption & Transmission ā Photoelectric Effect š…
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Introduction Gravitational waves are ripples in the fabric of spacetime, predicted by Einsteinās General Theory of Relativity (1915) and first directly detected in 2015 by LIGO (Laser Interferometer Gravitational-Wave Observatory). These waves are generated by the most violent cosmic eventsāmerging black holes, neutron stars, and supernovaeāand provide a new way to observe the universe. 1.…
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Newton’s law of universal gravitation (1687) was one of the most profound scientific breakthroughs in history, accurately describing: But in light of Einstein’s general relativity (1915), we now understand Newton’s law has fundamental limitations: Where Newton’s Law Fails The Mathematical Difference Newton (1687) Einstein (1915) F = G(māmā)/rĀ² Gįµ¤įµ„ = 8ĻTįµ¤įµ„ (field equations) Instantaneous action…
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The Core Idea: Gravity = Curved Spacetime Einstein’s revolutionary insight (1915) was that gravity isn’t a force like Newton thought – it’s the curvature of spacetime itself caused by mass and energy. The Two Key Principles: The Einstein Field Equations (Simplified) The full mathematical form looks complex:GĪ¼Ī½ = 8ĻG/c4 TĪ¼Ī½ But here’s what it means…
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Introduction String theory is one of the most ambitiousāand controversialāattempts to unify quantum mechanics and general relativity into a single “Theory of Everything.” Yet, after 50+ years of research, it remains a beautiful mystery, full of untested predictions and mathematical elegance. Hereās why string theory is still physicsā greatest unsolved puzzle: 1. The Core Idea:…
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Introduction Black holesācosmic monsters where gravity crushes matter into oblivionāchallenge our understanding of physics. At their edges (event horizons) and cores (singularities), Einsteinās general relativity (governing gravity) collides with quantum mechanics (ruling the subatomic). This conflict hints at a deeper theory: quantum gravity. Hereās how black holes probe the quantum universe: 1. The Black Hole…
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