Charred Paper Fiber
This is from a tapelift in the living room of a home. Incandescent light bulbs are generally the source
of these particles but electric baseboard heating elements can char paper fibers. The particles that settle on these surfaces in
either case tend to char and may then be launched by differences in the thermal coefficient of expansion into the convective air
flow over the surface. The tapelift preserved the fiber though it was subsequently broken on the adhesive due to handling of the
Transmitted Off Crossed Circular Polarized Light Illumination
These are single wood pulp fibers that have charred. They have lost all birefringence and tend to be opaque.
Significance in the Environment:
Charred paper fiber is more common in homes with electric baseboard heating or high intensity quartz-halogen light bulbs. They are
not created by fluorescent bulbs, steam heat, or forced air heating. They can be formed by open gas flame heaters typical of some
large factory areas.