Wow!!!
You have so many many blog posts I need to catch up on.
This - must get my EE husband (electrical engineer, god of electromagnetic radio waves or frequencies or something like that) to read this!
Laser light with which we cut 30mm thick steel in our factory is of a frequency that is totally harmless to our eyes or body… but what makes it able to cut steel and also cut through fingers is the FOCUS and the very high AMOUNT of energy (so at high focus and high energy AMOUNTS; any form of radiation (of any frequency level) can be harmful and most important parameter that determines the damage it can do is the ENERGY amount reaching a subject(in other words total amount of energy transferred to a subject; and if the subject cannot dissipate this energy at same rate as it receives the energy; the subject will get damaged).
Now I wonder about your EE friend...
Does he blog, does he publish?
Interesting stuff right.
Unfortunately this man does not blog. I know him because he owns a solar company in Indonesia and I ended up making some films for him back when we lived in Bali. He seems like a busy guy to me but I could probably have him answer questions if your husband has any.
We are both members of a small telegram group where we try to hold advanced conversations to help each of us further our knowledge in different directions.