5,790 reputation
1331
bio website lightandmatter.com
location
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visits member for 1 year, 5 months
seen 12 hours ago

I live in LA and enjoy day hikes, backpacking, rock climbing, and mountaineering.


12h
comment How To Quickly Warm A Tent
If this question is aimed at settling an argument with your girlfriend, I would definitely advocate this method. If you can keep this method going well enough to keep warm all night, then you're a better man than I.
23h
comment How To Quickly Warm A Tent
The tent's main purpose is not really to hold in warm air, it's to keep you from getting rained on and keep the wind off your face. Insulation is primarily the job of your sleeping bag and pad, and secondarily of any long underwear, socks, hat, etc., that you wear to bed. If you're too cold, you basically need a better bag and pad. It's not normal to heat a tent, and there is no easy way to do it.
1d
comment Onlinetool to setup a track in a map and calculate the distance
I've been using mapmyrun.com for this, but I'd prefer open-source software rather than being dependent on someone's web site.
2d
comment What is the name of this knot for tying into a “confidence” rope?
"Stopper knot" is one thing the knot could be used for, but it's not the name of the knot. I also disagree that the knot is good for the purpose advocated -- see my answer.
2d
answered What is the name of this knot for tying into a “confidence” rope?
Sep
12
answered How to tell the time at night
Sep
12
comment How to tell the time at night
@Shawn: The moon is not synchronized with the sun. Huh? They are almost exactly synchronized over the course of a night. A single night is a tiny fraction of a lunar month.
Sep
8
comment How do you locate the “North Star”?
@orangejewelweed: No eyeball technique using the stars is going to give you the kind of high-precision heading you could get from a properly adjusted magnetic compass. For example, if you have a map that shows you want to go 134 degrees east of north, locating Polaris by eye is only going to give you a rough idea of what direction that is. There are more sophisticated celestial navigation techniques, but they require instruments and possibly tables.
Sep
8
comment How do you locate the “North Star”?
Nice answer. From my latitude in Los Angeles, Cassiopeia is often visible when the big dipper is not. Polaris is not especially bright, so in big, light-polluted cities like mine, one can often use Cassiopeia to find north even if Polaris is too dim to see.
Sep
8
comment How do I find north using a watch?
@ChrisCudmore: It's only a very approximate way of finding north anyway.
Sep
7
comment Backpack strap chafing
Is the belly band tight enough so that most of the weight is on your hips?
Sep
4
comment Can you boil an egg in dirty water?
@Doc: based on what I've read in the past, shouldn't one be wary of all wilderness water (even fast-moving) because of the potential for things like tapeworm eggs from animal droppings? Where have you read this, and what wilderness areas do you have in mind? There is copious evidence that, e.g., water in the Sierra does not need to be treated. Are you thinking of giardia or other protozoan cysts, and perhaps misremembering this as tapeworms? In any case, there is no known disease-causing organism present in backcountry water that would survive boiling.
Sep
3
comment Bare Essentials for 2-3 day Hike
What is your total base weight right now, i.e., the weight not counting food or water? About 5-6 kg is reasonable for a lightweight summer setup. The biggest single item in your total weight right now the 3 kg of water. There is no way to tell whether this is necessary or not, because we don't know the availability of water along your route or whether water purification is necessary on your route. E.g., if you're in the Sierra, then water purification isn't needed, and the correct amount of water to carry is normally zero.
Sep
1
awarded  Necromancer
Aug
30
answered How much is a major load?
Aug
29
revised Major fall, same for static and dynamic?
spelling
Aug
28
comment How many calories does hiking burn?
related: physics.stackexchange.com/questions/77139/…
Aug
25
answered Should I bring my dog with us to a Cabin
Aug
24
comment How to find climbing shoes for toe and heel hooks?
Basically the ones with more of a curved heel are probably what you want. You might want to keep your original shoes in case you get interested in trad climbing and multipitch; they'll be more comfortable and practical for that.
Aug
23
accepted Shortening a shoulder-length sling to half-length?