Clarifying the Error in the Term "Trapping Shadows"
Clarifying the Error in the Term "Trapping Shadows"
If "shadow" refers to the darkness caused by an opaque object blocking light, then I argue the following:
A shadow is darkness—the absence of light—and therefore contains no color. If so, where do the colors in photographs come from?
Furthermore, "capturing" a shadow is impossible; a shadow isn't a physical substance you can trap, but rather a lack of one. How can one capture a void?
If the intended meaning is "trapping light", then that is equally impossible.
Light cannot be stored in its original form. Unlike heat or electricity, light is visible energy that must be converted or detected. If it were truly "trapped" as some claim, it would, by definition, no longer be visible light.
As previously explained, a camera detects light and converts it into electrical signals via thousands of microscopic photosensors. At this stage, light rays no longer exist. If the process stopped there, you would have no image and no light—only raw data.
The actual process of photography begins here: the camera's internal computer is programmed to translate this data back into colors produced by tiny lamps (pixels). Much like the LEDs in electronic storefront signs that light up words or images, these are simply far more microscopic—visible only under a microscope.
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