The switch to DST should be only be in the summer months. Start late May, wrap it up by early August. It is fully light early in the morning, most folks will have been up for hours, and it makes sense to get on with the day.
Buring a gallon of gas produces 120,000,000 Joules. Lets say we are cruising at 60mph and using 20hp (15kW). Lets say the car gets 30mpg. You burn a gallon of gas in 30 minutes, or 1800 second. (67kW) You are generating 52kW of waste heat.
If you charge at night when rates are low, you are using baseload power which is often from coal plants. If you discharge during peak use, you are offsetting natural gas turbine plants. Coal produces more CO2 per kwh than natural gas.
Many car manufactures recommend oil changes only every 15,000 miles (yearly) and that is likely only to keep dealers happy. With full synthetic, you could go likely go several years between oil changes. When was the last time you had a car that was scrapped or in for any major repair that could possibly been oil related? (not counting running out of oil, that is a different matter.j Coolent? Maybe at 60,000 miles, but it is not even on the maintaince schedule for most cars. Spark plugs? Probably good for the life of the car. Emmision controls? Catalytic converts can crack, but they are warrented for 60,000 miles or so. Oxygen sensors last a lot longer than they used to.
That pretty much leaves tires, filters and brakes. On hybrids, brake pads pretty much last forever, but it depends on your driving. Periodic fluid changs are stll recommneded, but thatis the same forelectrcs. Tires are the same, and you will still have to deal with the fault prone “TPMS” on any car. Cabin air filters are the only expensive and hard to replace filter, and again, same on any car.
Most of the cars I have had to ditch were due to faulty electronics. Their is literally no way to diagnose and repair a car with a faulty CAN bus. What $2000 module are you going to replace first? Don’t even think about replacing the computer with a salvaged one, the immobilizer will prevent that.
Some of the clocks were of different construction and used different time-keeping mechanisms. Some were hydrogen maser, some were cesium fountain. In 14 trips around the sun, they all kept time with one another.
It is unlikely that there will be a jump in battery storage density in the near future. What we hope to see is a continued reduction in cost.
How much battery do you really need? Is 200 miles per charge not enough? You can charge at home, daily. This would meet well over 90% of my driving needs.
Long trips are going to be an issue. Even charging rates of 200 miles per hour are going to add significant time to a long trips (1 hour of charging per 3 hours of driving). It is unlikely these rates will improve much. This is not a show-stopper, and there are ways around it, the easiest and cheapest would be to use a conventional ICE car for long trips.
Wouldn’t that be 2 children per women for stable population? I have never understood the 2.3 or any number higher than 2 except to account for more males being norn.
Even if you don’t count female children as “women”, that would imply a huge childhood mortality rate if 11% of children do not make it to adulthood (breeding age).
In fact, I would think the number would actaully be less than 2 since not all females in any given population have finished having children.
Except that is make fast food menus much more difficult to read, especially the sign menus behind the counter or at the drive through. The information is available by request or on the internet, it does not need to be plastered everywhere. Has this information actually helped you loose or maintain a healthy weight? Or it it just making you feel better about yourself? Ohhhh....I made a healthy choice! Now I can have a bag of cookies!
A few years ago, the NEC made it illegal to put incandescent bulbs in clothes closets. It was supposed to be a fire hazard. Actually, what they did was require fluorescent lighting, because LED lighting was not a thing when the rule was written.
The GU24 base was to prevent people from swapping the CFL for an incandescent bulb.
Grabbing the 12V terminal of a car battery that can deliver several hundred amps is not dangerous. Starter motors and other magnetic devices can throw off a nasty inductive kick that could boast the voltage at their input to several hundred volts if they are disconnected suddenly. I suppose under the right conditions, that could be fatal. But it is not really the high current that will get you, it is the boosted voltage and the time that the current flows.
A resistive heater that pulled several hundred amps form a car battery would pose no real danger of electrocution, but there are other dangers (burns, exploding batteries).
400VDC with any amount of current (and time) behind it is quite dangerous.
I would not assume that a spark ignition is safe and cannot kill you.
Static charges on you body can be several thousand volts. Discharging a static charge on your body is not particularly dangerous (to people). It is not so much that the current is low (it is not), it is that the current only flows for a very small fraction of a second.
Slashdot Mirror
So if the phone is plugged in to the car, the car becomes part of the phone and touching the steering wheel becomes illegal...
" farther forward on the wing, changing the airframe's aerodynamic lift. "
"farther forward on the wing, making the plane unstable."
FIFY
The switch to DST should be only be in the summer months. Start late May, wrap it up by early August. It is fully light early in the morning, most folks will have been up for hours, and it makes sense to get on with the day.
Can it efficiently turn coal directly into electricity and CO2? That would acrually be more useful.
Many gas stations don’t make money selling gas. Gas is sold as a loss leader at many stores.
With sub $2 gas, a 33MPG vehicle only uss $6,000 in gas in 100,000 miles. There are plenty of gasoline cars availabe for under $20K new.
Ues, lets do the arithmetic!
Buring a gallon of gas produces 120,000,000 Joules.
Lets say we are cruising at 60mph and using 20hp (15kW).
Lets say the car gets 30mpg.
You burn a gallon of gas in 30 minutes, or 1800 second. (67kW)
You are generating 52kW of waste heat.
If you charge at night when rates are low, you are using baseload power which is often from coal plants. If you discharge during peak use, you are offsetting natural gas turbine plants. Coal produces more CO2 per kwh than natural gas.
Sears teamed up with AOL before there really was an internet. If anything, there were in the game too soon.
$200 an hour would not even pay for the pilot and copilot.
Sounds like you are making work for yourself.
Many car manufactures recommend oil changes only every 15,000 miles (yearly) and that is likely only to keep dealers happy. With full synthetic, you could go likely go several years between oil changes. When was the last time you had a car that was scrapped or in for any major repair that could possibly been oil related? (not counting running out of oil, that is a different matter.j Coolent? Maybe at 60,000 miles, but it is not even on the maintaince schedule for most cars. Spark plugs? Probably good for the life of the car. Emmision controls? Catalytic converts can crack, but they are warrented for 60,000 miles or so. Oxygen sensors last a lot longer than they used to.
That pretty much leaves tires, filters and brakes. On hybrids, brake pads pretty much last forever, but it depends on your driving. Periodic fluid changs are stll recommneded, but thatis the same forelectrcs. Tires are the same, and you will still have to deal with the fault prone “TPMS” on any car. Cabin air filters are the only expensive and hard to replace filter, and again, same on any car.
Most of the cars I have had to ditch were due to faulty electronics. Their is literally no way to diagnose and repair a car with a faulty CAN bus. What $2000 module are you going to replace first? Don’t even think about replacing the computer with a salvaged one, the immobilizer will prevent that.
Wouldn't the images used for training be illegal. If so, how is it legally possible to train the network?
Buring 100 gallons of gasoline produces about 1 Ton of CO2. So extracting CO2 is about the same cost as buring the gasoline that put it there.
Some of the clocks were of different construction and used different time-keeping mechanisms. Some were hydrogen maser, some were cesium fountain. In 14 trips around the sun, they all kept time with one another.
It is unlikely that there will be a jump in battery storage density in the near future. What we hope to see is a continued reduction in cost.
How much battery do you really need? Is 200 miles per charge not enough? You can charge at home, daily. This would meet well over 90% of my driving needs.
Long trips are going to be an issue. Even charging rates of 200 miles per hour are going to add significant time to a long trips (1 hour of charging per 3 hours of driving). It is unlikely these rates will improve much. This is not a show-stopper, and there are ways around it, the easiest and cheapest would be to use a conventional ICE car for long trips.
What cleanup are you talking about?
Wouldn’t that be 2 children per women for stable population? I have never understood the 2.3 or any number higher than 2 except to account for more males being norn.
Even if you don’t count female children as “women”, that would imply a huge childhood mortality rate if 11% of children do not make it to adulthood (breeding age).
In fact, I would think the number would actaully be less than 2 since not all females in any given population have finished having children.
Except that is make fast food menus much more difficult to read, especially the sign menus behind the counter or at the drive through. The information is available by request or on the internet, it does not need to be plastered everywhere. Has this information actually helped you loose or maintain a healthy weight? Or it it just making you feel better about yourself? Ohhhh....I made a healthy choice! Now I can have a bag of cookies!
And the memory is used. With 100% confidence!
Do write and erase until it is broken and you know have many cycles it had left.
A few years ago, the NEC made it illegal to put incandescent bulbs in clothes closets. It was supposed to be a fire hazard. Actually, what they did was require fluorescent lighting, because LED lighting was not a thing when the rule was written.
The GU24 base was to prevent people from swapping the CFL for an incandescent bulb.
No.
E is a base size. E26 is standard, E12 is candelabra, E39 is Mogul. The diameter is in mm.
A is a bulb size. The diameter is in sort-of 1/8th inch.
https://en.wikipedia.org/wiki/...
There are 52 weeks in a year. 10 days is two weeks. That is only 4%... the difference between making $100,000 a year and $104,000.
I think there was an AC Clarke story about this.
Better than fire?
Random charge and discharge cycles for power line white noise generator.
Grabbing the 12V terminal of a car battery that can deliver several hundred amps is not dangerous. Starter motors and other magnetic devices can throw off a nasty inductive kick that could boast the voltage at their input to several hundred volts if they are disconnected suddenly. I suppose under the right conditions, that could be fatal. But it is not really the high current that will get you, it is the boosted voltage and the time that the current flows.
A resistive heater that pulled several hundred amps form a car battery would pose no real danger of electrocution, but there are other dangers (burns, exploding batteries).
400VDC with any amount of current (and time) behind it is quite dangerous.
I would not assume that a spark ignition is safe and cannot kill you.
Static charges on you body can be several thousand volts. Discharging a static charge on your body is not particularly dangerous (to people). It is not so much that the current is low (it is not), it is that the current only flows for a very small fraction of a second.
Last time I checked, I could not even get a full schematic for the Raspberry Pi. The product does not seem friendly to hardware hacking at all.