Pratique du Shadowing: The unexpected math behind Van Gogh's "Starry Night" - Natalya St. Clair - Apprendre l'anglais à l'oral avec YouTube

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One of the most remarkable aspects of the human brain is its ability to recognize patterns and describe them.
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One of the most remarkable aspects of the human brain is its ability to recognize patterns and describe them.
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Among the hardest patterns we've tried to understand is the concept of turbulent flow in fluid dynamics.
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The German physicist Werner Heisenberg said, "When I meet God, I'm going to ask him two questions: why relativity and why turbulence?
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I really believe he will have an answer for the first." As difficult as turbulence is to understand mathematically, we can use art to depict the way it looks.
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In June 1889, Vincent van Gogh painted the view just before sunrise from the window of his room at the Saint-Paul-de-Mausole asylum in Saint-Rémy-de-Provence, where he'd admitted himself after mutilating his own ear in a psychotic episode.
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In "The Starry Night," his circular brushstrokes create a night sky filled with swirling clouds and eddies of stars.
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Van Gogh and other Impressionists represented light in a different way than their predecessors, seeming to capture its motion, for instance, across sun-dappled waters, or here in star light that twinkles and melts through milky waves of blue night sky.
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The effect is caused by luminance, the intensity of the light in the colors on the canvas.
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The more primitive part of our visual cortex, which sees light contrast and motion, but not color, will blend two differently colored areas together if they have the same luminance.
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But our brains' primate subdivision will see the contrasting colors without blending.
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With these two interpretations happening at once, the light in many Impressionist works seems to pulse, flicker and radiate oddly.
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That's how this and other Impressionist works use quickly executed prominent brushstrokes to capture something strikingly real about how light moves.
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Sixty years later, Russian mathematician Andrey Kolmogorov furthered our mathematical understanding of turbulence when he proposed that energy in a turbulent fluid at length R varies in proportion to the 5/3rds power of R.
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Experimental measurements show Kolmogorov was remarkably close to the way turbulent flow works, although a complete description of turbulence remains one of the unsolved problems in physics.
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A turbulent flow is self-similar if there is an energy cascade.
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In other words, big eddies transfer their energy to smaller eddies, which do likewise at other scales.
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Examples of this include Jupiter's Great Red Spot, cloud formations and interstellar dust particles.
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In 2004, using the Hubble Space Telescope, scientists saw the eddies of a distant cloud of dust and gas around a star, and it reminded them of Van Gogh's "Starry Night." This motivated scientists from Mexico, Spain and England to study the luminance in Van Gogh's paintings in detail.
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They discovered that there is a distinct pattern of turbulent fluid structures close to Kolmogorov's equation hidden in many of Van Gogh's paintings.
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The researchers digitized the paintings, and measured how brightness varies between any two pixels.
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From the curves measured for pixel separations, they concluded that paintings from Van Gogh's period of psychotic agitation behave remarkably similar to fluid turbulence.
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His self-portrait with a pipe, from a calmer period in Van Gogh's life, showed no sign of this correspondence.
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And neither did other artists' work that seemed equally turbulent at first glance, like Munch's "The Scream." While it's too easy to say Van Gogh's turbulent genius enabled him to depict turbulence, it's also far too difficult to accurately express the rousing beauty of the fact that in a period of intense suffering, Van Gogh was somehow able to perceive and represent one of the most supremely difficult concepts nature has ever brought before mankind, and to unite his unique mind's eye with the deepest mysteries of movement, fluid and light.

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Context & Background

In this insightful video, Natalya St. Clair explores the fascinating relationship between art and mathematics, focusing on Vincent van Gogh's iconic painting "The Starry Night." She delves into how the depiction of turbulent flow in fluid dynamics parallels the swirling brushstrokes of Van Gogh’s work. Through her analysis, viewers not only gain a deeper appreciation for the painting but also engage with complex scientific concepts presented in an accessible manner. This intersection of art and science serves as a rich resource for English learners who wish to enhance their vocabulary and comprehension skills while enjoying cultural topics.

Top 5 Phrases for Daily Communication

  • “The ability to recognize patterns” - A phrase useful for discussing observations in various fields, including art and science.
  • “Shape our understanding” - Often used to describe how experiences or knowledge affect our perceptions.
  • “Strikingly real” - A way to express something that is vividly authentic or impactful.
  • “Period of psychotic agitation” - A phrase that could help in discussions about mental health, particularly in historical contexts.
  • “Unite his unique mind's eye” - Ideal for conversations about perspective and creativity in art.

Step-by-step Shadowing Guide

To effectively use the shadowing site method with this video, follow these steps:

  1. Watch the video without subtitles: First, observe the speaking style and grasp the overall theme. This will help you absorb the tone and emotions conveyed by the speaker.
  2. Listen with subtitles: Enable subtitles to understand the phrases more deeply. Pay attention to how the sentences are structured.
  3. Rewind and repeat: Use a shadowing app to replay sentences. Try to mimic the speaker’s intonation and pacing. Don’t hesitate to pause and practice difficult phrases or sentences.
  4. Record your voice: Record yourself speaking along with the video. This allows you to compare your pronunciation and rhythm to the original.
  5. Engage with the content: Discuss the themes such as the relationship between art and mathematics, or the significance of Van Gogh’s work in various contexts with other learners or through platforms like shadowspeaks.

By immersing yourself in such rich content, you not only learn English with YouTube but also appreciate the profound connections between different fields of knowledge. Happy learning!

Qu'est-ce que la technique du Shadowing ?

Le Shadowing est une technique d'apprentissage des langues fondée sur la science, développée à l'origine pour la formation des interprètes professionnels. Le principe est simple mais puissant : vous écoutez de l'anglais natif et le répétez immédiatement à voix haute — comme une ombre suivant le locuteur avec un décalage de 1 à 2 secondes. Les recherches montrent une amélioration significative de la précision de la prononciation, de l'intonation, du rythme, des liaisons, de la compréhension orale et de la fluidité.

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