Approximately 90% of light is lost after the first centimeter of tissue depth due to reflection and scatter; only 10% of light penetrates past the first centimeter, and only 10% of that 10% (or 1% of original) penetrates to the third centimeter of depth.
factualpending
Evidence Quote
“what we know is close to 90 of the light is lost after the very first centimeter of depth... only 10 percent is penetrating past the initial first centimeter... and only 534 millijoules per centimeter squared or 0.534 joules per centimeter squared is making it to the third centimeter of depth”
Created: 8/13/2026, 7:47:20 AM
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