Interference Patten in standing waves

AI Thread Summary
To capture images of interference patterns in standing waves, use a camera with a low to moderate shutter speed. The observed patterns may result from the strobing effect of an LED flash rather than true interference. For better results, utilize an external light source with minimal flicker, such as a halogen spotlight, and keep the shutter open longer. This technique will help to create a clearer visual representation of the wave's curve. Proper lighting and camera settings are essential for accurate photography of these phenomena.
jihoonkim
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Please Help! Whenever i read standing waves, the interference patten can be seen as attached pictures. I want to know how this pictures can be taken?
How lights can be interfered?
 

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Those look to me to be simply a string that is driven by a motor at one end and attached to a fix point at the other.
 
To answer your first question about how to take the pictures of an interference pattern, take your camera and if it's set from a low to moderate shutter speed it'll work.
 
This appears to me to be the result of the strobing of the led flash on rope/string and not interference patterns. Try using external light source w/minimal flicker, e.g. a halogen spot, and leave the shutter open longer. That should allow the light to smear all under the curve of the wave (assuming you are demonstrating the using the aforementioned setup as it appears.) Good luck!
 
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