web analytics

Turks and Caicos, Part 2

S/V Good Karma at Turtle Cove Marina, TCI

Ok, after being here on the Turks and Caicos Islands for a few days, we find ourselves quite happy to be back in the “first world.” The Bahamas were OK, but they weren’t quite what we call first world. Not third or second either, more like 1.5 world.

So what the heck does that mean, anyway? Well, first world is kind of like the U.S., where the infrastructure is really quite excellent, most people are middle class and the crime rate is low or at least you know where it is high or low. Third world is where 90% of the population would be considered in abject poverty by U.S. standards. In the third world there is no widespread infrastructure and where it exists, in big cities, it is shaky at best. The crime rate may not be high but there is lots of petty crime caused mainly by the poverty. The Bahamas is certainly not at this level. Oh, and as a side note, I’m not sure what “second world” is so I’m leaving that out. I think it used to be the communist countries?

Anyway, the Bahamas have OK infrastructure, but not great, and you can get most anything but man is it expensive. And for what you pay, they don’t have much to show for it. Common food items are way more expensive. Boat hardware was unbelievably overpriced. Much of this was due to the import and VAT taxes they add on, and there again, not much to show for such high taxes. Locals even complained they have to pay those taxes with nothing to show for them. There was also significant poverty in the Bahamas, though not third-world poverty.

Contrast that with the TCIs (Turks and Caicos Islands). These islands are actually British territory and I believe that is the main difference from the Bahamas, which are their own country. There is conspicuously more money here and as far as we can tell they spend it on infrastructure. The grocery store is well-stocked and not overpriced. No wild dogs chasing us, no trash on the beach. In the resort areas it is much like Hawaii, we concluded, definitely a tourist destination in my book.

So, maybe we’ll retire here!


Posted in Uncategorized by with comments disabled.

ICW Mile 965: Ft. Pierce Inlet

img_1853

Anchored In Ft. Pierce

Made yet another long overnight jump between ICW inlets and are now finally a few hours away from our first long rest stop. Vero Beach is actually north of us by about 12 miles but we stopped here to rest after the 13 hour journey.

It was very quiet and almost windless over this last leg so the motor was droning on for the entire voyage and we did not sail at all. For some reason on these last two overnight legs I have not been able to sleep much on my rest period but Shelly was able to sleep well which is good. Podcasts do well to help pass the time when there isn’t much to look at. There was a full moon last night and it is quite warm all night, so at least we are back in summer weather. 83 degrees here today!


Posted in Uncategorized by with 1 comment.

Garage Laser Experiments

photo 3 copy 2

Blue Laser in Night Sky

Ok, here are some of my recent laser experiments. Kids, don’t try this at home…

First I went out to the web to see what was the most powerful laser I could purchase for a reasonable price. What I found was someone selling the generator from a laser welder. It was pretty cheap so I bought it. I then bought a used power supply that could deliver 30 amps at 5 volts really cheap at an electronics surplus store. The power supply would deliver up to 60 amps so I built a resistor array that would limit the current to 25 amps and added a push button to turn the power on. The resulting setup is shown in the picture below.

CannonSetup

The power supply is the box in the upper left. The laser is the gold box center right with the current limiting resistor array bottom left. Now I wanted to turn it on to see what it could do.

Note the safety goggles in the pic above. These are absolutely required for everyone in the room when this laser is turned on. They must filter the correct frequency of light and be rated in strength according to the laser power. Click here to see this laser in operation. The video shows the laser burning a white cardboard box.

This laser has many dangerous characteristics. Besides the obvious risk of fire, this laser can burn skin. But the greatest hazard is to the eye. The light emitted by this laser is ten thousand times brighter than a laser pointer. You should never look directly at a laser of any power because the eye focuses and magnifies the light on your retina up to 100,000 times. That means a moderately powered laser can instantly burn a hole in the retina causing permanent damage. The injury happens faster than the human blink reflex.

There are a couple more insidious hazards for this kind of laser. First, because it is so bright even a reflection off a matte surface (non-reflective) can cause eye damage. And most dangerous of all, the light is infrared, meaning that it is invisible. A camera is sensitive down in the infrared range so you can see it in the video image, but to the eye it is largely invisible.

It’s a good idea to know what you are doing if you decide to turn on a powerful laser like this. I decided to limit my experiments using this particular laser…

So next I explored what was available in a smaller form factor. When you search these things out, you come up with the popular 445nm blue laser diode used in modern video projectors. There are many hackers who have designed tiny driver boards that allow these diodes to be overdriven to more than 3 watts using a small cell phone battery. What that means is that these lasers can be pushed to run more powerful than they are expected to operate in normal conditions. When the laser is overdriven in this manner, it can easily burn at a distance. So of course I decided to build one. I ordered the parts shown below:

LaserComponents

The cylindrical object at the top of the photo is what the laser is mounted in, only about an inch long. The round electronic board at the bottom is a hacker designed charge pump board that delivers the high amperage necessary to overdrive the laser. It’s about the size of a quarter. The laser itself is the small object just to the upper right of the round circuit board.

The small round object in the upper right corner is a glass lens. Normally the laser mount has a plastic lens to focus the beam but because this is an overdriven laser, a glass lens is required so that the lens itself won’t melt.

BlueBurner

I got this one put together and tested it (wearing the appropriate safety goggles) and it easily burned stuff at close range. I took a pic of the laser firing at a cardboard box above.

Both of these lasers are the result of high tech manufacturing processes, that is, they are built using semiconductor diodes that did not exist only a few years ago. So perhaps the most interesting laser of all is a home built laser that requires nothing but common material and emits ultraviolet light. I was quite astonished at its simplicity, especially given the difficulties encountered in building the first laser in 1960. In that case it took the intense effort of a corporate research laboratory to develop the first working laser. I wonder how much of history would be different if it was known how easy it was to build a laser like I describe in my next post…


Posted in Nuclear Fusion Reactor, Uncategorized by with comments disabled.

Updates

Screen Shot 2014-02-23 at 4.50.03 PMFrickin’ Laser Beams!

Hey everyone, well I’ve not been in the wild much lately but I have been obsessively working in the lab. The latest two projects have been particle accelerators and lasers. The nuclear reactor is still in progress as well but I need a couple of critical items that are proving difficult to acquire. In the meantime, progress is being made on other evil projects.

One project is the first step in what I feel will be my ultimate cool experiment, a home made cyclotron. It is a relatively sophisticated particle accelerator that moves subatomic particles along a circular path. It can be done and the equipment requirements are similar to what is needed for a fusion reactor. A first step is to build a linear accelerator that can be built with common parts. I was able to do this and I’ll write about it soon.

The other project has to do with lasers. Wow, I have to say that surprised and impressed at what is available to buy on the internet. I will have an entire category dedicated to these experiments. Like the radiation experiments I have been documenting, these lasers are easy to acquire and extremely dangerous. They won’t kill you but they can certainly cause devastating injuries, namely partial or total blindness.

Fun stuff!


Posted in Uncategorized by with comments disabled.

Power controller progress

PowerControlWireMany Green Wires

I spent the evening soldering wires to connectors. I now have the power supply control bus connected up to an Arduino shield. Something tells me OSHA wouldn’t approve..;)

 


Posted in Uncategorized by with comments disabled.

How to build a vacuum chamber…

sapporoStart with a beer…

Here is a list of easy-to-find parts necessary to build a nuclear fusion reactor and where to find them:

  1. Beer can (liquor store)
  2. Oil burner igniter (online spark plug store)
  3. Threadsaver sized for the spark plug (hardware store)
  4. Small lexan or polycarbonate sheet (hardware store)
  5. Two 1.5″ zinc washers (hardware store)
  6. 6″x6″ thin neoprene sheet (hardware store)
  7. Four 1″ C-clamps (hardware store)
  8. Small portion of JB Weld or similar epoxy (hardware store)
  9. Thread seal tape (hardware store)
  10. Large gauge wire crimps (Radio Shack)
  11. Stainless steel wire (Radio Shack)
  12. KF25 weldable nipple (eBay or scientific vacuum company)

Total cost: $79.40

And actually, it’s much less than that, probably well under $50 due to the fact that the smallest amounts of these items is much more than required for the reactor. The most expensive item was the threadsaver, basically a small sleeve for the spark plug, because they only come in boxes of 8 and you only need one.

How do you build the chamber? Well, first you get the proper beer can. Aluminum won’t do. However, Sapporo beer cans are made out of corrugated steel and are surprisingly strong. You can get them almost anywhere that sells Japanese beer.

The next thing you do is empty the beer. My friend Anna asked, “do you pour the beer out in the sink?” Well yes, that is one method. Another method would be to pour the beer into your mouth and drink it.

When the beer is empty, drill two holes of proper size, the spark hole (below, top) and then the vacuum feedthrough hole (below, bottom).

IMG_0562

IMG_0564Next, cut the top off. This is more difficult than you might imagine, I used some small tin snips and needle-nose pliers to remove the top (pic below). It is much more difficult to do this on a steel can vs aluminum and you should wear proper gloves unless you like multiple, deep cuts on your fingers. This will be the viewport.

IMG_0568After you’ve finished drilling and cutting, clean out the can with soap and water and let dry. Next, cut the neoprene in the shape of the zinc washer to be used as a gasket, then cut a small square from the lexan sheet (below).

IMG_0571Next step is to epoxy the vacuum and spark plug feedthroughs. Epoxy one of the zinc washers on the viewport end. Epoxy the lexan window to the other zinc washer (see below).

IMG_0573

During this process, don’t forget to keep the supervisor happy:

supervisorWait until the epoxy sets, about 24 hours, and then add thread sealant tape to the spark plug and crank it in tight. Clamp together the gasket and window flange to the viewport end.

Now you’re ready to test the vacuum!

Attach the chamber to a vacuum pump that has an appropriate vacuum gauge (see two pics below):

Chamber2

Chamber1Turn on the pump and wait. After several minutes, my chamber read below 70 millitorr (last pic below). That’s good enough for the first step, a “demo” reactor that will generate an air plasma. Cool!

Next: Hooking up the power !!

70microns.

 

 


Posted in Nuclear Fusion Reactor, Uncategorized by with comments disabled.

Snow is coming!

OK, well after a couple of weeks of temps getting up into the 60s, we’re ready for some snow on the Front Range. Looks like it’s coming. The CAIC forecast for this afternoon:

High clouds are streaming into Colorado from the west and southwest as the next winter storm approaches. This system is a very large low-pressure trough with lots of cold air.

 The storm looks big on the radar:

Weather1-10

Mountains are supposed to get 2-7 inches new snow. Cool! Maybe we can get some backcountry skiing in this weekend.


Posted in Uncategorized by with comments disabled.

Ouray Ice Climbing

The Ouray Ice Festival is in full swing this week at the Ouray Ice Park.. Below is an article I wrote for Mountain Gazette a few years back:

Colorado Ice Climbing

I was reclining under a dark January sky as enormous snowflakes lighted on my face, feeling like a shower of tingling cold pinpoints. It was an excellent sensory contrast to the soothing hot water in which the rest of my body was submerged. The round wooden tub was fed directly from a natural hot spring behind the Box Canyon Lodge, and was positioned on a hill overlooking the mountain village of Ouray, Colorado.

I quaffed a cold beer, enjoying glimpses of town light glowing on the gray walls of the surrounding valley, walls that rose into a night fog so dense it could conceal this mountain refuge from the world of industry and schedules.

The sound of women laughing in the next tub wafted through the mist. “Yes… He’s a friend of mine and I talked him into letting me use his tool,” one of the women said. Another giggled in reply, “Well, what was it like?”

“It was fantastic!” she exclaimed, “The shaft had an easy grip and the length was perfect. The curve felt kind of strange, but believe me, when I got busy it made all the difference.”

“Did you get wet?” a third woman asked. “Of course! How could I do it without getting wet, silly? You should try it!” They all laughed.

Yeah. Ice climbing. In Ouray, the ice climbing capitol of the West, you rarely hear talk of much else. I took a deep breath of the crisp, pine-tinged atmosphere well below freezing. As I kneaded stiff muscles in the calescent pool, I reflected on my need to ritualistically suffer on frigid walls of ice. The motivations are complex, but let’s immediately put to rest the idea that ice climbing is merely another sport for adrenalized thrill-seekers attempting to live on the edge.

Of all my climbing experiences, from the thin air of high-altitude mountaineering to roped technical rock, ice climbing is uniquely gratifying. Unlike a rock route literally fixed in stone, the line of an ice route is essentially as you choose it. It is like the difference between a resort skier descending a groomed run versus a telemark skier savoring first powder tracks in a backcountry bowl.

On ice you must be completely self-reliant. Because your life and limb depend on your actions, you are forced into Zen-like clarity of mind directed at your very place and moment. Like a Buddhist master, you are fully immersed in here and now.

At the finish of a difficult route, you enjoy the victory of having crafted your own line of ascent. It is not uncommon to feel like a prophet reeling from a metaphysical vision. Your core spirit is energized, enlightened, and you know you are alive.

Much of the time that vision extracts a toll. Among the most-common and excruciating experiences ice climbers suffer is the rewarming of hands. The thickest practical gloves used by ice climbers cannot perfectly insulate. And gripping an ice tool above your head further drives the blood from your fingers.

Re-establishing full blood flow can be tortuous. Your fingers feel as if they are being crushed by pliers as a blowtorch sears your flesh. No kidding. It is perhaps one of the most painful experiences possible that does no actual harm. There is no relief as your world spins in eye-watering agony for several minutes.

By the time the water had re-warmed my body, the snow had accumulated two inches outside the tub. I scurried to my room with my hair and beard encased in ice. After drying off, I dressed and hiked a few blocks to Buen Tiempo, a bar famous for warming fleece-clad climber’s fresh off the ice. I sipped margs with climbing buddies old and new, laughed at our ice follies, admired tales of difficult ascents and anticipated ambitious plans for the next day. Climbers from Colorado and beyond crowded in and loud conversation reverberated off the walls. We were a tribe celebrating our bonding rite.

The next morning I was shivering in knee-deep snow at the base of a blue-gray ice wall, intentionally stripped down to minimal clothing. I would soon work myself into a sweat. I struggled to tie into a frozen-stiff rope. I swung an ice tool, sinking the pick into plastic ice. I repeated the action with my other tool. I then kicked my right foot into the ice knee-high, sticking my crampon frontpoint perpendicular to the wall. I stepped up. I alternated this action, tool and crampon, until I was twenty feet above the ground.

I twisted a screw into crackling ice. Frigid water that was running down the wall also ran into my sleeve, sending a cold rivulet down my arm and torso. I clipped my rope and continued up, shoulders and calves burning. I hammered the ice and unintentionally cracked off a chunk the size of a dinner plate above me. It nailed me in the face, drawing blood and swelling my lower lip. I looked like I was on the losing end of a bar fight. I continued up.

The ice constantly changes. I love it.

—Mark Scott-Nash


Posted in Uncategorized by with comments disabled.

The Snow is in Steamboat!

Near record December snow in Steamboat!
Photo by John F. Russell, published in the Steamboat Pilot and Today.

Though the Front Range continues to struggle with moderate to low snow depth, the Steamboat area is doing great! Snowfall totals for December is 66.9 inches, the sixth highest recorded.

Though Steamboat is well-known for its downhill ski resort, remember that it is surrounded by vast tracts of stunningly beautiful wilderness that sees very few visitors, only about two and a half hours from the west side of Denver, assuming you avoid the I-70 jam-ups, that is…


Posted in Uncategorized by with comments disabled.

Colorado man among two mountaineers killed on Argentina climb – The Denver Post

Summit of Aconcagua on a relatively mild day, December 24th, 1991.

Summit of Aconcagua on a relatively mild day, December 24th, 1991.

Aconcagua is technically very easy by its popular routes, the normal route is like hiking Mt. Bierstadt. But at nearly 23,000 feet high, the extreme altitude and weather produce a regular death toll even to very experienced climbers:

Colorado man among two mountaineers killed on Argentina climb – The Denver Post.


Posted in Uncategorized by with comments disabled.