We are ALL time-travellers. According to Einstein we move thru spacetime, not time. One day at a time…. Personally, I cannot see how time travel is possible. Nor is it sensible. Being able to go back in time and change something is just a fantastically stupid concept as to be non-sensical. Why would… Continue reading Time Travel – is it possible?
New publication in LSM
I’ve just received acknowledgement that my paper – High speed ink aggregates are ejected from tattoos during Q‐switched Nd:YAG laser treatments has been accepted for publication in Lasers in Surgery and Medicine. It should be available for public consumption next month, but if you want a wee preview just let me know. Mike.
Refresher Courses
I can now offer the following ‘refresher courses’: Laser tattoo removal: Choosing the correct settings Which laser is best? How does it actually work? Ink colours Pain management Managing patient expectations Minimising risk Laser/IPL removal of hair, vessel, pigmentation + skin rejuvenation Choosing the correct settings… Understanding the light-tissue interactions The critical importance of… Continue reading Refresher Courses
Are you getting the best out of your IPL system? Most people don’t….
IPL systems can generate excellent results in many conditions, if used correctly. However, I constantly hear people telling me that they “can’t get good results” with theirs! Why is this? Well, basically it comes down to two main factors: either their equipment is not very good or cannot output a sufficient energy or… Continue reading Are you getting the best out of your IPL system? Most people don’t….
Q-switches: Passive vs Active?
Throughout the last few years I have heard some people (usually sales people) trying to bamboozle potential customers with various nonsense claims. This is to be expected I suppose, but one which does irritate me greatly is the ‘active’ vs ‘passive’ Q-switch debate!! So, I thought I’d write a wee piece about this topic,… Continue reading Q-switches: Passive vs Active?
How long is a beam of laser light?
Well, this is a very interesting question…. From a ‘classical’ viewpoint (i.e. the world in which we live) this is easily calculated by multiplying the speed of light, c, with the laser pulse duration. So, for a Q-switched Nd:YAG laser of, say, 5 nanosecond duration, the laser pulse is approx. 1.49 metres long, while a… Continue reading How long is a beam of laser light?
More on Thermal Relaxation Times
TRTs I’ve had a number of enquiries about my article on the relevance of thermal relaxation times in photothermal treatments. They were asking for clarification. So here goes…. Thermal relaxation time (TRT) describes how quickly an object loses heat energy. Typically, it is the time taken for the temperature of an object to drop… Continue reading More on Thermal Relaxation Times
