Life disturbs local entropy. An example of which is our oxygen atmosphere which is made by living things. Excess methane on Mars and Titan has been attributed to life, but is most likely the result of natural processes.
Going there just because it is easier is nothing but a crock. The ONLY criterion for a visit should be: which is judged to be a more likely candidate for life?
NASA uses the search for life to justify space exploration, but the search is almost certain to fail. All known life (ie, on Earth) is obviously exothermic. The oxygen in our atmosphere is a clear marker for life. There is nothing comparable to this elsewhere in the solar system.
anyone have any simple circuit designs on using an LED as a light sensor
No, I don't think that is going to work. You need a phototransistor or photodiode. Years ago I built a little circuit around a chip which detects changes in light intensity. It is intended for use in an alarm. You might still be able to find this device.
and then making some more LEDs react by blinking?
That part is pretty easy. Maybe think in terms of passing the output of a photodiode into a comparator to give a nice 1/0 output and using that signal to control the reset on a binary counter. Then feed the outputs from the counter into the LEDs.
Same here but this article is probably about taking that data and archiving it in a database elsewhere with a nifty web front end so higher ups can import it into excel and fabricate correlations before leaving it on a running laptop on the tube after going to the pub and having a drink or 10 too many.
Since I intend for my people to walk among the stars, using less power really isn't an option I want to go with.
If you want to live on, for example, Mars you will have to find a way to close all the loops in your environment. That is the issue we are faced with now. Finding ways to make renewable energy brings us closer to space travel.
In other news I have two work friends who commute from Kinglake every day. I haven't been able to get on to them today. Find out tomorrow morning I suppose.
Most commercial operating systems put limits on the number of users. VMS does it. Windows does it. Now that online services are starting to use centralised authentication it will be possible for the OS to require you to log on to a different account on the client to use a different account on the server, then to demand a license for the additional user.
You can't buy stock in Canonical, it's a private limited company.
Shuttleworth could sell, probably for many billions of dollars but he could just start or fund a new debian drived distro with some of the new cash injected into it.
There are conventional bars in Utah, or at least there are things that look a lot like bars, they just are technically clubs and require you to fill out a form and pay a small "membership fee" to get a drink.
Makes me wonder what you have to do there to get into a brothel...
Gas-driven (not gasoline) buses has been around for at least a decade. It's just that they use a different type of gas.
Do you mean to say that methane driven buses haven't bee used up to now? I know for a fact they are used in Sydney and Melbourne though the CH4 comes out of the ground.
Waste won't give us enough methane to replace oil, but we can make methane directly from water, sunlight and CO2 so maybe that will be done in the long term.
Slashdot Mirror
I think the last bit was just in the film. In the book the message was clearly a warning to stay the fsck off Europa, or else.
Life disturbs local entropy. An example of which is our oxygen atmosphere which is made by living things. Excess methane on Mars and Titan has been attributed to life, but is most likely the result of natural processes.
Going there just because it is easier is nothing but a crock. The ONLY criterion for a visit should be: which is judged to be a more likely candidate for life?
NASA uses the search for life to justify space exploration, but the search is almost certain to fail. All known life (ie, on Earth) is obviously exothermic. The oxygen in our atmosphere is a clear marker for life. There is nothing comparable to this elsewhere in the solar system.
Send a manned mission to Titan.
anyone have any simple circuit designs on using an LED as a light sensor
No, I don't think that is going to work. You need a phototransistor or photodiode. Years ago I built a little circuit around a chip which detects changes in light intensity. It is intended for use in an alarm. You might still be able to find this device.
and then making some more LEDs react by blinking?
That part is pretty easy. Maybe think in terms of passing the output of a photodiode into a comparator to give a nice 1/0 output and using that signal to control the reset on a binary counter. Then feed the outputs from the counter into the LEDs.
If we didn't write the summary he wouldn't remember the fix the next morning. At least this way he will get reminded about it.
Well I am glad they still support octal.
Same here but this article is probably about taking that data and archiving it in a database elsewhere with a nifty web front end so higher ups can import it into excel and fabricate correlations before leaving it on a running laptop on the tube after going to the pub and having a drink or 10 too many.
I am sure he will make a lot of friends there.
Are you somehow implying that I'm against renewable energy in any shape or form?
No, just your assumption that using less power isn't an option for living in space.
Since I intend for my people to walk among the stars, using less power really isn't an option I want to go with.
If you want to live on, for example, Mars you will have to find a way to close all the loops in your environment. That is the issue we are faced with now. Finding ways to make renewable energy brings us closer to space travel.
So turn off the warning signs. That will save some power.
aka "be more poor".
You're the kind of person that recommends starving people just eat less.
I ride a bike to work. What about you?
In other news I have two work friends who commute from Kinglake every day. I haven't been able to get on to them today. Find out tomorrow morning I suppose.
Plants use solar, but very few natural things use wind or tidal power.
Birds use wind power for lift.
But there's no easy and efficient means of stepping the power down.
Why not? You could just wire Germany, France and Italy in series.
Most commercial operating systems put limits on the number of users. VMS does it. Windows does it. Now that online services are starting to use centralised authentication it will be possible for the OS to require you to log on to a different account on the client to use a different account on the server, then to demand a license for the additional user.
You can't buy stock in Canonical, it's a private limited company.
Shuttleworth could sell, probably for many billions of dollars but he could just start or fund a new debian drived distro with some of the new cash injected into it.
There are conventional bars in Utah, or at least there are things that look a lot like bars, they just are technically clubs and require you to fill out a form and pay a small "membership fee" to get a drink.
Makes me wonder what you have to do there to get into a brothel...
You forgot 2001. And since you pointed to a story by Harlan Ellison you should point to the terminator as well.
... "A Young Lady's Illustrated Primer" and infused it with nanotech, but that's just me.
Can you make me a vacuum supported airship out of diamond while you are at it?
Just thinking about the opening scenes over the south china sea, that book would make a great movie.
Gas-driven (not gasoline) buses has been around for at least a decade. It's just that they use a different type of gas.
Do you mean to say that methane driven buses haven't bee used up to now? I know for a fact they are used in Sydney and Melbourne though the CH4 comes out of the ground.
Waste won't give us enough methane to replace oil, but we can make methane directly from water, sunlight and CO2 so maybe that will be done in the long term.
For now on, every time a Slashdot editor posts a link that isn't the original source of the story, I'll be posting the original link.
Bless you my son.
Interesting also that this is kind of a hybrid. The outside is artificial but the actual operating cells are normal liver cells.
Makes me wonder about building an artificial heart powered by normal muscle. It would solve the power supply problem.