General Questions

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Duke
I wear monthly disposables...
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Same here, mine are night and days so if I'm camping or something I can leave them in for a day or so. I'll never go two weeks with constant wear again. Not after the staff infection in my left eye.:scared:

Don't worry, it's gone now.

ExigeEvan
Weird, neither me or my sis have ever noticed it
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Mabey your not as observant as some of us...
 
Except with contacts, I can get my prescription updated pretty much whenever I feel like it; at least once a year. With lasik, you'd need to get recut... and my prescription is stable, but it ain't that stable.
 
Duke
With lasik, you'd need to get recut... and my prescription is stable, but it ain't that stable.
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If you we're a candidate to get it done in the first place it doesn’t quite work that way. There is a very low chance that your vision would change after you’ve had it done.

As a side note to my surgery, the moment I left the office I had 20/20 vision but as my right eye healed I lost a bit of that perfect vision. They gave it a bit to heal, went in and made the right adjustment with the laser. Everything has been perfect for the last two years. 30 seconds per eye for a lifetime of clear vision and no contacts or glasses makes life fantastic.

I would have never guessed that you and Dan would be so nervous of technology.
 
How are they going to prevent my eye from continuing to change shape? That's a normal byproduct of aging, along with reduced flexibility of focus. I fail to see how adjusting the focal length of my eye (to correct the original issue of myopia) is going to address either of those two issues.
 
Sure, you can be too young...or...eh hem....too old to prevent some kind of further change. I was just adding to the conversation. I know it isn’t for everyone but in my case it the results prove to be worth it.



Or you're just chicken.
dunnoaz4.gif
 
No-one is going near my eyes with a sharp thing and a burny thing. Oh no no no.

Annoyingly, I have a double astigmatism which means I can only wear toric lenses, and because I've got odd eyes anyway, there's literally one single type of lens I can wear and that's a daily disposable. £31 for a box of 30 lenses.
I freaked my optician out because I have absolutely perfect vision with my lenses in, but not when wearing my glasses. He said I'm the only person he's ever tested who does that :lol:
 
My son is an officer in the Honor Guard ("The Old Guard") unit at Ft. Myer, Arlington. His official duties are medical support for the president and staff, but he gets a couple of the tailored uniforms, a saber, special armband, etc. etc. Because the cover interferes with his glasses, the army is giving him Lasik to fix his eyes so he won't need the glasses.

Get in a special unit, get pretty good treatment.
 
Roo
How are motor racing tracks, particularly ovals, measured for length? For example, Bristol Motor Speedway is 0.533 miles long; is that the length of the white line on the inside, the wall around the outside or how far it is in the middle of the racetrack?
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Oddly enough, this question was just asked in the most recent Car and Driver magazine. The answer given is the center line where the outer and inner distances are averaged (stated by the FIA).
 
UnoMOTO
Or you're just chicken.
dunnoaz4.gif
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I just don't see it as worth the risk of blindness. Just to keep this conversation grounded, I'll mention that the guy I was talking about who had the surgery that went badly was going blind... and eventually killed himself.

I'm not pretending that's normal, or likely, or even remotely likely. But are the alternatives really bad enough to risk your eyesight entirely? Vision is just too important. I might risk sense of smell, maaaybe even hearing. But sight is #1 on the list.
 
I think that smell and hearing are more important in motor sport viewing than eyesight. Hearing the engine and smelling the fuel would be more important to me than seeing the car. Though, obviously that would have disadvantages.

Milford Cubicle
and because I've got odd eyes anyway
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Panther-chameleon.jpg

Could it be?
 
Danoff
I just don't see it as worth the risk of blindness.
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I tried looking up some success rates on the net for lasik but for as many as I found with a 95% and above (which included all side effects, not just blindness) results I find the same amount of articles saying that the lasik studies are mostly sponsored by the doctors and have the facts skewed. I can say for sure that out of the five or so people that I personally know that have had it, the success rate is 100%.

On that note I also found other useless facts that everyone should know.


Odds of bowling a 300 game: 11,500 to 1

Odds of getting a hole in one: 5,000 to 1

Odds of getting canonized: 20,000,000 to 1

Odds of being an astronaut: 13,200,000 to 1

Odds of winning an Olympic medal: 662,000 to 1

Odds of an American speaking Cherokee: 15000 to 1

Odds that a person between the age of 18 and 29 does NOT read a newspaper regularly: 3 to 1

Odds that an American adult does not want to live to age 120 under any circumstances: 3 to 2

Odds of injury from fireworks: 19,556 to 1

Odds of injury from shaving: 6,585 to 1

Odds of injury from using a chain saw: 4,464 to 1

Odds of injury from mowing the lawn: 3,623 to 1

Odds of fatally slipping in bath or shower: 2,232 to 1

Odds of drowning in a bathtub: 685,000 to 1

Odds of being killed on a 5-mile bus trip: 500,000,000 to 1
 
UnoMOTO
Odds of being killed on a 5-mile bus trip: 500,000,000 to 1
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Was the one person injured or ill, or bored?

Whenever I set my computer's desktop background to an image, the desktop turns turquoise upon next use. Is there some obvious reason for this?
 
UnoMOTO
Odds of fatally slipping in bath or shower: 2,232 to 1
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That seems wrong. That would mean that for every 2,232 people in the population, 1 of them will die by slipping in the shower - assuming that it's the odds of fatally slipping in the bath or shower at any time in your life. Because if those are the odds per-shower, I've well outperformed the odds. I've taken something like twice that many showers and am still alive.

The US has 300,000,000 people. So if 1 out of every 2232 people die in the shower, that adds up to over 134,000 of the people alive in the US today.

Divide that up over the average showering lifespan of 65 years (subtracted some from the average lifespan to account for bathing) and you get over 2000 shower slipping fatalities per year. I can't find shower slipping figures out there, but that actually doesn't sound impossible. Especially when you consider how the odds of slipping in the shower increases with age.
 
Metar
They do that, I assume, to maintain precision?

I always wanted to try contact-lenses. Now's the time, I guess, as my glass lens is getting unclear and the frame is warped from the last 6-7 years.. In which case - the old reuseable ones, or the daily ones?
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I use daily ones, I find that easier than worrying about cleaning solutions.

Duke
In fact, I clean mine with peroxide once a week
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I once put my lense in without rinsing the peroxide off first. Burnt the surface of my eye.

As for Lasik treatment, apart from the cost of it, I am too scared to try it in case it buggers up my eyes and leaves me unable to wear contacts. I never want to go back to wearing glasses.
 
Wenders
I once put my lense in without rinsing the peroxide off first. Burnt the surface of my eye.
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The kit I have has a fancy little lens holder, and some kind of metal ring at the bottom that chemically neutralizes the peroxide after about 4-6 hours. However, I'm always careful to rinse them with regular solution anyway. I'm sorry to hear about your eye.
 
I'm sure there's too many list, and quite dependant on local conditions.

But carbon, water, hydrogen, nitrogen, potassium and phosphorus are probably a good start.
 
Wood is about half (40-50%) organic compounds consisting of biomolecules which includes proteins, lipids, nucleic acids (cellulose), while the other half consists of (15-30%) of a complex chemical compound that is classed as a organic polymer employing 30% of non-fossil organic carbon (lignin), and about 15-20% of heteropolymers (matrix polysaccharides), which contains many different sugar monomers like glucose and sugar monomers which can include xylose, mannose, galactose, rhamnose, and arabinose, along with D-pentose sugars and occasionally small amounts of L-sugars.
 
ExigeEvan
I'm sure there's too many list, and quite dependant on local conditions.

But carbon, water, hydrogen, nitrogen, potassium and phosphorus are probably a good start.
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No comment :D

I'd say carbon, hydrogen and oxygen would make up the vast majority of the wood (being the sole components of cellulose and lignin). There'd be trace amounts of nitrogen, potassium and phosphorus from compounds essential for life (amino acids, nucleic acids, ATP, NADP) and some magnesium (from chlorophyll).
 
daan
Wood is made of tree.
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:lol:
Or is tree made of wood?


This reminds me of a question I had back in Grd 9 or so. There are 3 states of being, solid, liquid and gas, and the say that everything is one of those 3. So what is fire?
 
There's 6 states of matter - solid, liquid, gas, plasma, Fermionic Condensate and Bose-Einstein Condensate.

However, fire isn't matter - it's energy (specifically heat and light energy). Fire itself has no mass, though may contain burning particles which do and a small amount of matter in a plasma state.
 
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