“No Pain, No Gain” – hair removal using light energy!

OK! PDF version This is really quite simple! Human thermal/pain receptors (nociceptors) are triggered at around 45 C. Below that temperature you feel heat – above it, and you feel pain. NASA has proved this beyond doubt! So, to achieve permanent, or even ‘semi-permanent’ hair removal you need to apply sufficient heat energy, for a… Continue reading “No Pain, No Gain” – hair removal using light energy!

Variable pulsewidth vascular system for dermatology | (1994) | Gustafsson | Publications | SPIE

via Variable pulsewidth vascular system for dermatology | (1994) | Gustafsson | Publications | Spie   ┬áThis report describes the world’s first IPL system, developed by Morgan Gustafsson in the early 1990s. Back then we didn’t call it IPL – that name came later. Morgan approached me at an ASLMS conference after I gave a… Continue reading Variable pulsewidth vascular system for dermatology | (1994) | Gustafsson | Publications | SPIE

Q-switched ruby laser treatment of benign pigmented lesions in Chinese skin. – PubMed – NCBI

via Q-switched ruby laser treatment of benign pigmented lesions in Chinese skin. – PubMed – NCBI   One of the first reports into the use of the Q-switched ruby laser in the treatment of Chinese pigmented lesions in patients in Taiwan.   Mike. mike@dermalase.co.uk

Calculation of the clinical parameters to effect removal of Port Wine Stains | (1990) | MJ Murphy | Publications | SPIE

via Calculation of the clinical parameters to effect removal of port wine stains | (1990) | Murphy | Publications | Spie   I started doing Monte Carlo and numerical thermal models in 1987 to try and figure out the ‘best’ set of laser parameters to treat PWS vessels. That was a long time ago! Since… Continue reading Calculation of the clinical parameters to effect removal of Port Wine Stains | (1990) | MJ Murphy | Publications | SPIE

Port Wine Stains: optical assessment and practical implementation of treatment | (1990) | MJ Murphy | Publications | SPIE

via Port wine stains: optical assessment and practical implementation of treatment | (1990) | Murphy | Publications | Spie   A report I co-authored with some colleagues in Strathclyde University describing our attempts to treat PWS with Candela’s original pulsed dye laser, back in the mid 1980s. We designed a PC-operated scanning system to deliver… Continue reading Port Wine Stains: optical assessment and practical implementation of treatment | (1990) | MJ Murphy | Publications | SPIE

Eggs, and their Arrhenius Parameters

  Eggs! Wonderful things. Scrambled, boiled, fried, curried…. Also, very useful to demonstrate the difference in the Arrhenius Parameters with different proteins. Eggs contain at least two sets of proteins – the yoke (also including some fat, vitamins, lecithin and minerals) and albumen (about 40 different proteins in the white). When we cook eggs we… Continue reading Eggs, and their Arrhenius Parameters