358 reputation
18
bio website inspirehep.net/…
location Duchy of Grand Fenwick
age 43
visits member for 2 years, 2 months
seen 21 hours ago

Experimental nuclear and particle physicist. These days I'm teaching, but I've spent a lot of time on nucleon structure in fixed target electron scattering and neutrino oscillations using reactors and beam sources.


Jun
5
comment What are the physical problems for a hard practitioner when he/she suddenly stop his Martial Arts workouts?
I don't speak for anyone else, but I get grumpy and ted to insomnia when I'm not getting my exercise.
May
3
revised What material should be covered in a rape-defense course?
wordo fixes
May
3
comment What material should be covered in a rape-defense course?
Nice. Especially about the scaling argument. I'm 5'8" and about 160# when I'm really in shape. I have thrown guys who're 6'2" and 200# in hard sparring. And I've knocked them stumbling back with kicks or swept their legs. Sometimes. When it all comes together. Most of the time I'm lucky to escape the counter that's coming: all to often they've handed me my head on a platter.
Apr
21
comment Krav Maga, is it 100% legal for defense?
In most of the world the question "Is [violent action XYZ] legal for defense?" can only be answered with detailed knowledge of the situation in which it occurs.
Mar
17
comment Is practising techniques on both the left and right sides beneficial or detrimental to martial development?
"That's why guitarists pick a side and stick with it." But of course, guitarists face no risk of being attacked by a off-handed guitar...
Mar
1
answered Frequency of Martial Arts lessons
Feb
28
comment Frequency of Martial Arts lessons
Those who can't get in the forth and fifth formal sessions a week can get some of the benefit by doing some solo work. Forms, bag work, footwork drill, and so on. There are whole books on the subject (links to a couple that I have and think are pretty good). You don't in the more learning, but you do forget less between sessions.
Feb
27
comment What's the difference between Internal and External martial arts?
Those who like to pigeon hole things make two separate distinction internal/external and hard/soft. This goes to the hard/soft distinction rather than the internal/external. While it is true that more systems are hard-external (TKD, many karate systems) or soft-internal (what akido I've learned leaned this way, but I hate to make a strong claim for the whole discipline) than hard-internal (ba-gua maybe? I haven't done one of these) or soft-external (judo at least the way I started learning it), they are still two different ways to categorize a system.
Feb
27
comment What material should be covered in a rape-defense course?
Situational awareness is critical, but you can't train that in a short time anymore than you can develop sophisticated technique-based fighting skills without on-going practice.
Feb
19
comment What is the best way to determine board-breaking ability?
Google up "inch punch break" to see some breaks done with very little range. That works because you're not throwing your fist at the target: you are pushing it forward with a whole chain of connections through you body and into the ground. It's form and technique that make you hit hard, and that's why you're not going to get a satisfactory answer in terms of momentum or kinetic energy. The measurements you propose won't answer the question.
Feb
19
comment What is the best way to determine board-breaking ability?
In the absence of fancy kit you can armor up (say TKD pads, use two if you're worried) and say "Punch me here" for a rough idea. It can be instructive about how important it is not to let the other guy have time to set up a big lunge punch unless you like trying to breath with the wind knocked out of you.
Feb
19
comment What is the best way to determine board-breaking ability?
Me? I'd put a stress transducer under the skin of a ~40 Kg heavy bag and say "Punch this". Better still use an ballistics gelatin model with an articulated softwood skeleton or a crash dummy. If you want to improve it do both speed drills and heavy bag work and get an expert partner to criticize your form over and over again.
Feb
19
revised What is the best way to determine board-breaking ability?
added 327 characters in body
Feb
19
comment What is the best way to determine board-breaking ability?
Still "Neither". Here you are looking for "peak pressure" and most systems teach generating it through a kinematic chain where you are attached to the ground.
Feb
19
revised What is the best way to determine board-breaking ability?
added 327 characters in body
Feb
19
comment What is the best way to determine board-breaking ability?
The question is fine, even natural, but the underlying assumption that it has a physics 101 answer is simply wrong. Biomechanics is hard. The biology and physics of injury is very hard. One punch|kick|throw|block|sweep|lock is not equivalent to another for these purposes.
Feb
19
revised What is the best way to determine board-breaking ability?
deleted 1 characters in body
Feb
19
comment What is the best way to determine board-breaking ability?
Feel free to check my profile. I have a bit more physics than that. Heck, Ive taught physics 101 as instructor of record at a major university.
Feb
19
answered What is the best way to determine board-breaking ability?
Feb
12
awarded  Yearling