Posted by admin | Posted in Uncategorized | Posted on 08-10-2010
Tags: diy, flashlight, hardware, led, torch
Visual inspection with non LED flashlight specified why?
The visual inspection instructions of a maintenance task specified not to use an LED flashlight why? Is the white color of the light detrimental to a visual inspection, are they too bright does the frequency of light block the detection of cracks or shadows?
I don’t think Robert has it right because the procedure states if cracks were detected or suspected to perform a dye penetrant inspection.
nm = nanometers.
White LED lights are made up of the three primary colors (Red – 650 nm, Green – 575 nm and Blue – 475 nm). The lights are combined to make white. LEDs emit light in an extremely narrow wavelength.
Surfaces that reflect light outside the 450-675 nm range would not reflect any light when using an LED. Also, any surfaces that would reflect light in the 525 nm range would also not be visible.
Incandescent light emits light in a very wide spectrum throughout the visible light spectrum. Visible light is in the 380 – 770 nm range. So a white LED would not reflect light between 380 nm – 425 nm and 675 nm – 770 nm along with a narrow band near 525 nm.
Inforce White Flashlight at Xfighterdefense.com
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