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DIY High Speed Video Camera - Muybridge Style  - Smarter Every Day 5

DIY High Speed Video Camera - Muybridge Style - Smarter Every Day 5

SmarterEveryDay3 min3 juin 2011
The idea, here at Smarter Every Day, is to make you smarter.
5 chapitres
  • Historical Context and Muybridge's Photography Method(0'060'49)
    In 1872, the governor of California commissioned photographer Eadweard Muybridge to answer whether all four of a horse's hooves leave the ground while running, challenging artistic depictions of the era.
    Muybridge used a series of strings strung across a path, with each string connected to a camera. As the horse ran through the strings, the horse's arrival would trigger the camera, creating a time-of-arrival switch system.
    This approach combined simpler technologies in a clever way to answer a complex question about motion.
    Muybridge's sequential photography technique became a foundation for modern high-speed analysis and motion studies.
  • Modern Equipment and Pulse Generator Setup(0'491'32)
    A pulse generator provided by Quantum Composers, a company in Montana, serves as the core technology.
    • Programmable to 25 picosecond resolution • Triggered acoustically via a piezoelectric transducer • Can flash with precise timing after sound detection
    The piezoelectric transducer detects acoustic triggers and signals the pulse generator to flash, enabling synchronized high-speed imaging.
    This setup recreates Muybridge's sequential photography method, creating a series of high-speed images that can be compiled into video, just like the original work.
  • Bullet Photography Experiment and Results(1'322'24)
    All experiments were conducted by educated, experienced personnel in a controlled environment, with emphasis on responsible handling of weapons.
    Initial video footage captured the shots as they occurred, showing the raw results of the trigger-based photography method.
    Footage was corrected for ballistic variance and reordered by distance to create a coherent sequence showing the bullet's progression.
    The processed video demonstrates multiple sequential images of the bullet in flight, similar to Muybridge's horse photographs.
  • DIY Camera Advantages and Broader Applications(2'242'45)
    This DIY approach creates a high-speed camera at a fraction of the cost of commercial high-speed cameras.
    The resulting images have 7 times the resolution of 1080p, exceeding many commercial high-speed camera options.
    • Combines simpler, accessible technologies to achieve results that would normally require expensive specialized equipment • Works particularly well for repetitive events • Demonstrates resourceful engineering thinking
    The creator plans future improvements to the system and encourages technical audiences to explore similar approaches.
  • Wrap-Up and Interdisciplinary Learning(2'453'44)
    • Art - creating visual sequences and motion analysis • Science - studying motion and physics • Math - calculating timing and resolution • History - understanding Muybridge's original work
    The experiment combined practical gun handling, camera operation, and time-synchronization techniques in a real-world application.
    Viewers are encouraged to subscribe, share with friends, and visit the website for additional engineering content and resources.
    A bonus segment features a chicken demonstrating biological feedback control systems in its head stabilization during body movement.