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quote:
Originally posted by b_a
Generally the reason the other light is soon to follow is that they have been burning for an equal amount of time.
While it's true that a light bulb has an average lifetime, that doesn't mean all light bulbs will continue to work for the same amount of time. Light bulbs fail when when outside air reaches the filament or if the filament breaks due to excessive vibration. Some bulbs fail more quickly due to anomalies in the manufacturing process, but on average have a given lifetime.
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Light bulbs fail due to repeated stresses on the filament. Air infiltration failure is pretty rare.
A filaments life is defined by the number of "on-off" cycles it undergoes. With vehicles, there is another factor and that is vibration. It would nice if all the lights on vehicles could be LEDs.
Puna: Our roosters crow first
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quote:
Originally posted by b_a
... There would actually be decreased resistance in the circuit, as a light bulb is a resistor.
b_a: Your statement above would be correct in an electrical circuit in which resistors (bulbs) are wired in series. In an automobile circuit involving headlights, using bulbs in series would be a very bad idea as the failure of one headlight would result in both headlights failing!
Headlights in an automobile are wired in parallel vs. series specifically so that the failure of one bulb doesn't cascade to total circuit failure. Given two resistors of equal resistance wired in parallel, the failure of one resistor will result in a circuit with double the total resistance - an increase in resistance.
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Just saw a temporary tag that said 9/31/2015!! I had to laugh a little.
Puna: Our roosters crow first
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I bought a new car from Orchid Isle many years ago and the registration licence no. they gave me was incorrect. It was only one number off and of course I never spotted it.
It went through two safety inspections with no problems at Firestone. It was only the third inspection at some other place that caught it.
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Check the exact dates on your insurance cards. I figured, when the newest insurance card arrived in the mail, I could safely toss the old one. Not so. I took my daughter's car to Goodyear in Hilo for the inspection. The service manager called me into his office and said the card I needed to show, with that days date, was the one he had to see. The card I gave him started coverage in a few days. I had to call the insurance company and have them email the previous card. Watch those dates on your cards, and don't toss the old one when the new one arrives, unless the dates overlap.
Jon in Keaau/HPP
Jon in Keaau/HPP
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The service manager called me into his office and said the card I needed to show, with that days date, was the one he had to see. The card I gave him started coverage in a few days.
That is why when I found a slightly used DeLorean DMC-12 with an aftermarket Flux Capacitor already installed for a good price on Craigslist, I bought it at the asking price. It's saved time (yes it has) on many occasions when a trip Back to the Future, or Forward to the Future was necessary to sort out some bureaucratic paperwork. Among other things.
BTW, the Lilikoi Festival at Makuu on Saturday, Oct. 17, the 9th Annual Paradise Studio Tour, Saturday and Sunday, 10am-4pm, December 5 & 6, and the Pahoa Craft Fair from 7 a.m. to 2 p.m. on Saturday, Dec. 5 are all fantastic!
"I'm at that stage in life where I stay out of discussions. Even if you say 1+1=5, you're right - have fun." - Keanu Reeves
