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--- lctgmeetingsummary20250723 [2025.07.23 11:05] – created Steve Isenberg
+++ lctgmeetingsummary20250723 [2025.07.23 11:10] (current) – Steve Isenberg
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 ===VLBI and Wave Interference Fundamentals===
-Ted explains the basics of Very Long Baseline Interferometry (VLBI) radio telescopes and their use in imaging black holes. He discusses the importance of precision timing, data collection, and correlation processing in VLBI. Ted then introduces the concept of interference, starting with Christian Huygens' wave theory of light and Thomas Young's double-slit experiment. He describes how Young demonstrated interference patterns with water waves and light, laying the foundation for understanding wave interference in radio astronomy.
+Ted Kochanski presented and first he explains the basics of Very Long Baseline Interferometry (VLBI) radio telescopes and their use in imaging black holes. He discusses the importance of precision timing, data collection, and correlation processing in VLBI. Ted then introduces the concept of interference, starting with Christian Huygens' wave theory of light and Thomas Young's double-slit experiment. He describes how Young demonstrated interference patterns with water waves and light, laying the foundation for understanding wave interference in radio astronomy.
 ===Nodal Lines Demonstration and Challenges===
-Ted attempts to demonstrate nodal lines using a video presentation, but encounters technical difficulties with screen sharing. After resolving the issues, he shows a video of water waves created by two tappers, explaining how nodal lines form where the water remains still. He then transitions to demonstrate the same concept with sound waves using two loudspeakers placed 1.5 meters apart.
+A video shows a college lecturer demonstrating water waves created by two tappers, explaining how nodal lines form where the water remains still. He then transitions to demonstrate the same concept with sound waves using two loudspeakers placed 1.5 meters apart.
 ===Sound Wave Interference Demonstration===
-The instructor explains the concept of sound wave interference using two loudspeakers producing a 3,000 Hz tone. He calculates the angles and distances between maxima and minima for different positions in the lecture hall. The class then participates in a practical demonstration, with students standing up and moving their heads slowly to find locations of silence. The instructor points out that the separation between loud sound and silence is about 19 cm for those 5 meters away, increasing to 38 cm at 10 meters, and 60 cm at the back of the hall. Many students successfully identify areas of near-silence, confirming the theoretical calculations.
+The lecturer explains the concept of sound wave interference using two loudspeakers producing a 3,000 Hz tone. He calculates the angles and distances between maxima and minima for different positions in the lecture hall. In the video, his class then participates in a practical demonstration, with students standing up and moving their heads slowly to find locations of silence. The instructor points out that the separation between loud sound and silence is about 19 cm for those 5 meters away, increasing to 38 cm at 10 meters, and 60 cm at the back of the hall. Many students successfully identify areas of near-silence, confirming the theoretical calculations.
 ===Double-Slit Light Interference Demonstration===