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Tires can be relatively conductive these days. In the 50's you might have seen fuel tankers trailing grounding chains, and cars had static problems on the new AM/FM radios because the (tubed) tires built up a charge. These days? No chains, no static build-up. At least with car and truck tires...

I never dive solo. I always dive with my buddy Harvey. And even though people sometimes try to stick a third with us, pretending they don't see Harvey standing there, I only dive with Harvey. He's a six foot tall snow-white Puka rabbit, got sort of famous for a while back when he did a movie...

"Sounds like the wet BCD passed along a rogue current from the dock/buggy. A dripping wet BCD could get the wood wet enough to conduct electricity." Absolutely. A salt-water wet BCD will be a good conductor. This means the buggy was probably plugged in and there was a ground fault, energizing...

tbone- All the more reason that even diving with 1/4" farmer john and full hood, I long ago decided to make three punctures in my hood. One located over each ear, one on the back of the top of my head. The one on top is to ensure air can't be trapped in my hood. The ones over each...

Polycarbonates (i.e. Lexan) tend to range from 10x to 100x stronger than acrylics (PlexiGlass) but there is a wide range in each material and more from each maker. Depending on what you are looking for, I would suggest finding a SOURCE that carries "pipe" in the size range you anticipate using...

Bravo, scrane. I had the less common pleasure of taking SCUBA as a university offering. Taught mainly by a ex-D-day frogman. On the first meeting (A Thursday?) he warned us that we'd have to do 40 laps in the Olympic sized pool on Monday morning and we all quietly stared at each other and said...

3.6v accommodates a lithium battery. Either a lithium primary cell, like the Eveready Lithium, or a lithium rechargeable cell, and those come in AA form factor, called a "14500" size battery. On the Nautilus, IIRC there's also a time out timer (TOT) setting in the menu. That's something many...

One big caveat. Contacts these days usually means soft contacts, which means permeable contacts, which means the "protein soup" of the ocean is going to contaminate them and get lodged in them. And since you can get some nasty problems (including amoebic infections in fresh water) that way, by...

"Basically, once it got below 40% capacity, the chat feature became disabled." The threshold can be adjusted and IIRC disabled entirely in the software options. And there are a number of other options. The original Nautilus has a number of software settings. And as noted, that battery seems to...

Delta? I had to fly Delta pre-9/11 and I had booked a flight with a six hour layover in Atlanta to visit someone there. I asked the Delta clerks if I could book my duffle straight through to my destination, even if that meant bringing it to the airport ahead of time, so I wouldn't have to...

"New J valves are easily bought online, " Yes. And J-valves used to be what, $25 more than a K valve? Maybe a whole $45-50 for the J-valve? Well, as of now, USD is out of the J-valve business, and for the past several years they only sold them to military and special dealer channels, not to...

As Chairman Mao, Geo. Bush, and a couple of dozen other quotable people have said, "Trust but verify". If I don't know you, I am either diving solo or diving with extra care because I don't KNOW what you are going to do. Hey, that nice young man who lives down the hall is always who the psycho...

Sherry- Your lung capacity and condition and recovery all have pretty much nothing to do with diving. If you can breath well enough to swim or jog, you can dive. It may take you five more years to fully recover your lung capacity but that's got nothing to do with whether you can learn to dive...

I'm surprised that PADI et al haven't put up a wall of shame and blacklist, telling us all not to follow the examples of Mike Nelson and Jacque Cousteau, both known to have dove solo.(G)

Heli- There's an old saying that if you have to ask, you already know the answer. Arguably, the answer here is no, you are not ready, and that's why you asking questioning yourself. Now that may be wrong. In familiar waters, daylight, good weather, your own gear, it might be a milk run for you...

I think I've used the Hydro Optix brand. They need about 48 hours to fully dry out and bond to a lens, but after that they don't seem to care if they get wet. Defogging any stick-on lens shouldn't be too much of a stopper. In the worst case, you just let a little water stay in the bottom of your...

Dunno, guys. I was told it (45d ascents) was something that French instructors in the Carib were teaching as standard. Not being French and not being in the Carib, I never looked into the details. I figured conservative use of the USN tables would be good enough. And mind you, this was at a time...

Sam, I never said I didn't care, I said it wasn't my job. The same way that it isn't my job to go around handing out citations for BWI or catching undersize lobsters. My job is to report it to the appropriate powers when I see it. They get paid to enforce it. Sixty years and your concept of...

" The few long sandy beaches are rented by the government to.... As a rule diving is not allowed in this sort of places." Again, it will vary by state, but often the public beaches, state parks, county parks, have a total ban on scuba diving, or even the use of mask and fins (supposedly because...

No direct experience, but I would hope your doctor has the professionalism and courtesy to at least answer a fax or letter asking "Do you know if it would be safe for me to use this medicine?" That shouldn't require an examination, or a formal consult. As to the different types of glaucoma, I'd...