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MrYenko posted:Problem is, due to lovely construction practices, "Half of the living room, a switched circuit in the kitchen, the overhead light in the downstairs bathroom, and half of one outlet in the master bedroom" is really hard to fit on the tag next to a breaker. That's why in any decent commercial setup the circuit is labeled on the outlet. Right now I'm charging my laptop from PP-LV(8-46) CKT 20.
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Aug 12, 2014 15:39
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Dren posted:In fact, better to stay off the highway altogether. Actually probably better to just buy a safe station wagon and drive the speed limit and have only missionary sex with only someone you're married to and vote republican and build a wall around the states. I would expect to find that highways are probably where the least amount of motorcycle accidents occur.
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Aug 12, 2014 15:41
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KernelSlanders posted:This didn't get enough love. They should have thrown them a LOOP at 2:30 to make things really exciting. I like the fact that each alarm has a different sound. Do you think this is done by a committee to ensure they are unique, or everytime a new system is added, some junior computer janitor has to find a new sound? 'Bugger it, we've used all the "Woop-Woop" sounds and we're out of "Awooga" - time to break out the duck noises'
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Aug 12, 2014 15:44
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VelociBacon posted:I would expect to find that highways are probably where the least amount of motorcycle accidents occur. It's certainly where the least amount of fatalities occur:  I couldn't find figures on non-fatal injuries and the extent of those injuries, I'd guess that there were still less on interstates and freeways but that the injuries were often more severe.
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Aug 12, 2014 15:49
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VelociBacon posted:I would expect to find that highways are probably where the least amount of motorcycle accidents occur. Other than the higher speeds there, you have all the traffic moving in one direction, gentle curves, no intersections, no lights, no curbs to smash into if you're sliding on the ground, etc. You're most in danger around town there are lots of interactions with other drivers. Getting rear ended while stopped at a light is one of the most common accidents on a motorcycle. Still wear your gear. Something 20 mph is enough to tear through jeans and you're going to fall six feet onto your head no matter how fast you are moving.
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Aug 12, 2014 15:54
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Ya I work in a hospital and routinely pull the plug on young braindead riders so you don't have to remind me. I still want a bike but a lot of other critical care staff wouldn't consider it.
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Aug 12, 2014 15:58
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Or people pulling out on front of people on motorcycles. A former coworker of mine was cruising down the road when some lady in a car just pulled out in front of him. He was I think 16 at the time. He tried to stop and wrecked bad enough that the foot rest impaled the back of his leg. That required a lot of rehabilitation. Fortunately, he was wearing a helmet. The helmet cracked from the impact.
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Aug 12, 2014 16:21
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Evil_Greven posted:Or people pulling out on front of people on motorcycles. Same happened to my dad once, he was riding down the street and some guy who had just paid his insurance pulled out in front of him without looking. My dad hit the back of the car, and the bike and his shoulder were both messed up. He had to retire early because of the shoulder (he was already able to, but wanted a few more years to build up his pension), and eventually fixed the bike. The best part was that even though we had recently gotten him a cell phone, he didn't call us to let us know what was going on, just showed up hours later in a sling. He didn't want us to worry. So instead we got to freak out for a few hours because he was going for a short ride and vanished.
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Aug 12, 2014 16:28
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spog posted:I like the fact that each alarm has a different sound. Our surgery monitors beep in time with the heart rate. The beep changes pitch every couple minutes so you don't zone out and forget to keep paying attention to it.
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Aug 12, 2014 16:32
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TVs Ian posted:The best part was that even though we had recently gotten him a cell phone, he didn't call us to let us know what was going on, just showed up hours later in a sling. He didn't want us to worry. So instead we got to freak out for a few hours because he was going for a short ride and vanished. My mom was in an accident a couple years back and called me from the back of the ambulance. All I hear is a siren and she goes, "I was in a car accident, tell Dad, bye *click*". That's not too reassuring...
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Aug 12, 2014 16:44
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I read that as "Tell dad "bye"" and yeah, that'd be pretty disturbing.
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Aug 12, 2014 16:45
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Evil_Greven posted:Fortunately, he was wearing a helmet. The helmet cracked from the impact. That's what they're supposed to do. The helmet cracking disperses the force of the impact laterally as opposed to longitudinally, through your skull. That's why you're supposed to throw them out after an accident. Same with bullet proof jackets.
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Aug 12, 2014 16:48
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Bad Munki posted:I read that as "Tell dad "bye"" and yeah, that'd be pretty disturbing. Oh, jeez, yeah. She didn't sound bothered, just didn't want anyone to worry and us to know where she was. Just got a check over and didn't have any injuries. Why she called me 2.5 hours away instead of my dad or my sister who both live 5 minutes from where she was, I dunno.
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Aug 12, 2014 16:50
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FrozenVent posted:That's what they're supposed to do. The helmet cracking disperses the force of the impact laterally as opposed to longitudinally, through your skull. Same thing with collar bones.
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Aug 12, 2014 16:50
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The alarms are very carefully designed and I'm tempted to believe most follow pentatonic scales so that critical alarms that are outside of these scales are particularly jarring. KernelSlanders posted:Our surgery monitors beep in time with the heart rate. The beep changes pitch every couple minutes so you don't zone out and forget to keep paying attention to it. That change in pitch is actually the oxygen saturation changing.
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Aug 12, 2014 16:52
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VelociBacon posted:The alarms are very carefully designed and I'm tempted to believe most follow pentatonic scales so that critical alarms that are outside of these scales are particularly jarring. This interests me. Are critical alarms based off of tritones? Diminished chords? Tone clusters? Locrian mode? Serialized 12 tone? Microtonal scales?
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Aug 12, 2014 17:47
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FrozenVent posted:That's what they're supposed to do. The helmet cracking disperses the force of the impact laterally as opposed to longitudinally, through your skull. Yeah, but it was surprising since he was only going like 30mph. drat thing near split in two.
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Aug 12, 2014 17:51
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Evil_Greven posted:Yeah, but it was surprising since he was only going like 30mph. drat thing near split in two.
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Aug 12, 2014 17:58
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Cardiovorax posted:30 miles per hour is... 70kmh or so? That's pretty loving fast to face-plant on some asphalt. Assuming he weighed some 160 pounds, that's about 15000 Joules of kinetic energy - that's equivalent to a shot from a .50BMG rifle. Dispersed over a substantially larger area, of course, but still. You bothered to work out the energy but didnt know that 30mph is 48kph even roughly?
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Aug 12, 2014 18:12
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Cardiovorax posted:30 miles per hour is... 70kmh or so? ^^^ snap
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Aug 12, 2014 18:14
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Oops. Imperial measurements always confuse me, I guess I mixed up the conversion factors for inches and miles. e: still a good 7100 Joules, though. Cardiovorax fucked around with this message at 18:17 on Aug 12, 2014 |
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Aug 12, 2014 18:14
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Ferroque posted:This interests me. Are critical alarms based off of tritones? Diminished chords? Tone clusters? Locrian mode? Serialized 12 tone? Microtonal scales? You're probably one of about ten people in the world who care. The other nine design alarm tones for a living. JOB OPPORTUNITY SIGHTING
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Aug 12, 2014 19:00
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VelociBacon posted:The alarms are very carefully designed and I'm tempted to believe most follow pentatonic scales so that critical alarms that are outside of these scales are particularly jarring. Ferroque posted:This interests me. Are critical alarms based off of tritones? Diminished chords? Tone clusters? Locrian mode? Serialized 12 tone? Microtonal scales? Seconded. So normal stuff has that rock and roll feel. If poo poo's going wrong it's like some prog-rock song.
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Aug 12, 2014 19:25
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We had some idiot install an alarm meant for engine spaces on a bridge once. Bridges are pretty quiet, engine spaces are... Not. Thing went off and you could feel it in your chest, this really deep bass WAAAAAAAAAAAAAAAAAAAAAAAHHH. Must have taken a few years off my life. It was the "hey, can I have some attention?" alarm for the engine control computer. So don't just assume that loudness equals importance.
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Aug 12, 2014 19:34
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Ferroque posted:This interests me. Are critical alarms based off of tritones? Diminished chords? Tone clusters? Locrian mode? Serialized 12 tone? Microtonal scales? I looked on youtube and couldn't a great example, sorry. Most of the multi-tone alarms in a critical care unit are coming from the ventilators. Now that I think about it and read about scales I think it's actually on the sol-fa scale. Could be something like E-F-G-A-A kind of thing for a minor alarm and the critical alarms are definitely on a higher pitch and just one tone (D?) that is clearly discordant from minor alarms. I play guitar but don't study music theory. If you can find online the alarms for a PB840 vent you'll be able to hear it.
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Aug 12, 2014 19:54
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Dren posted:I was driving on a 4 lane highway, 3rd lane over. Some guy on a bike came up quick on my left to pass and, I only saw this out of my peripheral, tried to quickly cut in front of me but took the turn too hard. He was able to control his fall such that he slid on his back with his legs as up in the air as he could manage (he was wearing jeans, an armor jacket and a helmet) and he was also able to direct the bike away from traffic into the center jersey wall. Guy must have slid 100-200 yards before coming to a stop, at which point he got to his hands and knees. The dude is lucky I was able to safely stop instead of running him over. Sounds to me like someone needs to be educated on  motorcycle awareness Why weren't you vigilantly devoting nearly all of your attention to your mirrors to watch for a motorcycle exceeding the speed limit by a substantial figure that might want to cut into a tiny gap at the last second without signaling? If you had been aware of him you might have been able to slam on your brakes and open up a wider gap that wouldn't require a hard turn resulting in him ditching his bike on the freeway! Not actually saying you were in any way at fault, but the motorcycle community has a thing about being perpetual victims and offloading the onus for their own safety on everyone else - even when they do stupid poo poo like you described.
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Aug 12, 2014 19:57
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I think these guidelines (did) cover alarm design for nuclear power stations: http://www.iaea.org/inis/collection/NCLCollectionStore/_Public/26/025/26025881.pdfquote:If continuous, relatively loud signals are used, they may render other codes and signals less audible. Thus it may be necessary to consider the audibility of a signal not just in the presence of ambient control room noise, but also in combination with other signals that might plausibly occur at the same time. To avoid mutual masking, the frequencies of tonal signals associated with alarms that may be active at the same time should be separated by at least 20% of the center frequency. Also here is the inspection procedure for an NRC inspector checking out the "human performance" in a nuclear station: http://www.nrc.gov/reading-rm/doc-collections/insp-manual/inspection-procedure/ip71841.pdf Which includes this inspection point: quote:Auditory warning too loud? Too soft? Wrong pitch? Not sufficiently discriminable from other alarms or background?
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Aug 12, 2014 20:19
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Geoj posted:Sounds to me like someone needs to be educated on This isn't what the motorcycle community means when they say they want cars to be more alert. Also, get hosed. Get absolutely hosed.
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Aug 12, 2014 20:26
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MrYenko posted:You're probably one of about ten people in the world who care. The other nine design alarm tones for a living. Are the notes in the alarm equal tempered or justly intonated? A at 440 or 432? maybe this could lead to a long successful career 
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Aug 12, 2014 21:11
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I found this, which is a pretty good read. Dunno if it's common knowledge or old wive's tale lore, but the sounds on casino machines are engineered to play a C Major chord to create a comfortable, reassuring environment. http://www.condition.org/as87-8.htm edit: Also - http://en.wikipedia.org/wiki/Civil_defense_siren "Many warning sirens have a sound that is distinct from that used by emergency vehicles due to use of two simultaneous tones, with pitches usually in a 5:6 frequency ratio (an untempered minor third)." an AOL chatroom fucked around with this message at 21:39 on Aug 12, 2014 |
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Aug 12, 2014 21:30
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Ferroque posted:Are the notes in the alarm equal tempered or justly intonated? A at 440 or 432? Whatever this is? https://www.youtube.com/watch?v=FoX7vd30zq8
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Aug 12, 2014 22:14
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Ferroque posted:This interests me. Are critical alarms based off of tritones? Diminished chords? Tone clusters? Locrian mode? Serialized 12 tone? Microtonal scales? Even as a non-audio dude, the fact that all of those alarms manage to use different pitches, tones and frequencies is actually interesting. Are there like literaly industry standards re: audio alarms for specific alerts?
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Aug 12, 2014 22:31
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Fishstick posted:Even as a non-audio dude, the fact that all of those alarms manage to use different pitches, tones and frequencies is actually interesting. In the nuclear industry there are: quote:To avoid mutual masking, the frequencies of tonal signals associated with alarms that may be active at the same time should be separated by at least 20% of the center frequency. But generally the regulations are more along the lines of "make sure every alarm can be heard/distinguished and its up to you to figure out the details".
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Aug 12, 2014 22:33
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Regarding the broken charger stuck in the outlet: http://www.youtube.com/watch?v=wi-b9k-0KfE "Power A dapeer" Some of the clearances between the 120/240V and 5v are way too close. I heard that a girl got electrocuted by a knockoff charger. Three-Phase fucked around with this message at 22:57 on Aug 12, 2014 |
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Aug 12, 2014 22:55
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Three-Phase posted:Regarding the broken charger stuck in the outlet: quote:Apple has determined that under certain conditions the new ultracompact Apple USB power adapter's metal prongs can break off and remain in a power outlet, creating a risk of electric shock. We have received reports of detached blades involving a very small percentage of the adapters sold...
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Aug 12, 2014 23:26
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My grandfather used to work in a place which still had an old inert gas fire extinguishing system. According to him, the alarm for the system that would kill all oxygen dependant objects in the room including both the fire and people was designed to be so loud as to be physically painful to the ears to discourage workers from staying behind and "playing hero".
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Aug 13, 2014 00:38
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Asehujiko posted:My grandfather used to work in a place which still had an old inert gas fire extinguishing system. According to him, the alarm for the system that would kill all oxygen dependant objects in the room including both the fire and people was designed to be so loud as to be physically painful to the ears to discourage workers from staying behind and "playing hero". halon is loving nasty poo poo
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Aug 13, 2014 00:46
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Data so valuable that we're willing to kill our employees just to have a slightly better chance at saving it. Signs warning of asphyxiation? Don't be such a downer, man, everyone knows what halon is. Holy poo poo, "I'd better go get my wallet seconds before the massive blanket of deadly gas shoots out!" https://www.youtube.com/watch?v=2fyGGqgVzCY I Greyhound fucked around with this message at 01:01 on Aug 13, 2014 |
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Aug 13, 2014 00:54
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Those extinguishing systems don't displace the oxygen, they only dilute it. If you halve the oxygen content in the air almost nothing burns, but humans can still survive for long enough to leisurely walk out of a room.
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Aug 13, 2014 01:11
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Aug 13, 2014 01:18
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