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What does (simple) j/cm2 represent AND how does this result 6.959j/cm2?

What does (simple) j/cm2 represent AND how does this result 6.959j/cm2?

Grade:9

2 Answers

Saurabh Koranglekar
askIITians Faculty 10336 Points
2 years ago
Dear student

Please attach the image of the question

Regards
Vikas TU
14149 Points
2 years ago
It looks to me like they mean J/cm^2 doesn't it - but they may well just be pulling numbers out of the air.
To be electromagnetic flux is should be W/cm^2 - but it looks like a dosage is intended.
440J/treatment over 582cm^2 is 0.756J/cm^2 per treatment.
But that just means that the little "j" does not mean what we think it does. AFAIK: there is no evidence that any kind of laser treatment is effective as a treatment for hair loss.
It's snake oil - it is a waste of time pondering what snake-oil salesmen mean when they spout figures.

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