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Spyman

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Everything posted by Spyman

  1. Spyman

    Aw

    I would say as any (ranked) member of their "pack" instead of dominant, they don't view children as dominant, they realizes the differense in age and threat children accordingly, with a lot more patience and care than with adults, that goes for oldtimers and sickness too. Some dogs brought up badly can view themselves as the dominant leader.
  2. Google search turns up: OK, so it's an adjustable Voltage 0-60 V DC and adjustable Current 0-1.5 Amps power supply. Well, then I think it's safe to rule out the transformer and main fuses. What about the Voltage meter, does it correspond when turning the knob for Voltage ? (The meter switch needs to be in "V" position.) Also in some power supply the Current knob when turned to zero can cut off the output Voltage. And, yes, what does the Ampere meter show, when the switch is in "A" position ? I interpret that as you have already opened the housing. How are your electronic skills and do you have a test Voltmeter or similar instruments ? Some suggestions: The PS looks cind of old style, at least in the picture I have found with Google, and the output current is quite small, so it's possible that the output goes through the meter and/or the meter switch, which then could interupt the power if they are broken. It's also possible that there is an output fuse, if so, it's likely placed on the circuit board close to where the wires to the output terminal is connected, or somewhere along those wires between the board and terminals. Potentiometers, (behind the knobs), can oxidate if not used for a long time, usually it's enough to turn them all the way up and down a few times to establish contact. Have also happended to me, more than a few times, that reckless pre-owners have used extensive force while turning the knobs beyond the end, which causes the potentiometer housing to turn and eventually rips off the three wires connected to it. And take care if/when the mains is connected, electric chock can be lethal !
  3. Spyman

    Aw

    Well, they have personality just like humans, and humans can behave like that too. The big difference is in the loyalty, a high priority for the dogs self-interest is the family(/pack), while for humans relationships can change radically. One of my dogs, will protect me to his death if needed, the other one is more inclined to hide behind me, in threatening situations. Wolves also have need for social interactions, it's in their gene too... For a tamed wolf the human family would be the pack and they are very interested to interact with their pack.
  4. YES, and thats the reason to why it is called DARK Matter. AFAIK, Dark Matter is not "stitched" to space, it moves around and interacts through gravity. (Presumably Black Holes would consume Dark Matter too.) Here is a popular science article for you: (Albeit somewhat old, from 2002) http://www.space.com/scienceastronomy/astronomy/cosmic_darkmatt_020108-1.html
  5. The transformer is usually the most robust part in a power supply. (If it's toasted, a lot of other parts is too...) Why do you think the transformer is broken ? There is a lot of places that sell transformers or other electronic parts. But transformers come in the range from the small size of a sugar cube to the large size of buildings. Without details of the power supply unit it's hard to help.
  6. Postulates of special relativity: -> http://en.wikipedia.org/wiki/Postulates_of_special_relativity
  7. Spyman

    Aw

    From my understanding wolves are as loyal to their pack as dogs are to humans. I think a tamed wolf can show equal or higher social capacity than a dog. http://en.wikipedia.org/wiki/Gray_Wolf
  8. And here is that thread, for curious minds: -> http://www.scienceforums.net/forum/showthread.php?t=18070
  9. From your link: -> http://www.physlink.com/Education/AskExperts/ae13.cfm?CFID=22213950&CFTOKEN=50980107 What do you mean with: "the speed of light in a black hole is zero" ? I am not an expert on GR but I think your "missing thing" is: "relative the vantage point of the observer". And lightspeed in vacuum = (not including slowing down due to air), you probably meant flat space. EDIT(1): The formula c'=co(1 + V/c2) is NOT CORRECT: http://www.mathpages.com/rr/s6-03/6-03.htm EDIT(2): Gravitational time dilation formula: (outside a non-rotating sphere) http://en.wikipedia.org/wiki/Gravitational_time_dilation
  10. Wikipedia is a good resource for finding facts, type earth in the search box and press enter. http://en.wikipedia.org/wiki/Main_Page
  11. This is the only press release image from inside: http://photojournal.jpl.nasa.gov/catalog/PIA10077 You can see that the rover isn't very 'deep' yet and gauge the tilt of the slope down. But you can view all raw images for Spirit here: -> http://marsrovers.jpl.nasa.gov/gallery/all/spirit.html And here for Opportunity: -> http://marsrovers.jpl.nasa.gov/gallery/all/opportunity.html Where you can find this series of snapshots, from the Rear camera, when it goes over the edge: http://marsrovers.jpl.nasa.gov/gallery/all/opportunity_r1291.html And some nice pictures of the surrondings, from the Navigation camera, the same day: http://marsrovers.jpl.nasa.gov/gallery/all/opportunity_n1291.html There is also a huge bunch of newer pictures, if one have the patience to search through them. (Most of them are for navigation and scientific reasons and not for our pleasure.)
  12. So you should have said "Einstein didn't accept it initially either". OK, so I am nitpicking, but you could have admitted that you where wrong and corrected/explained yourself directly, instead of making a 'verbose' argument about it. And - "ning" on yourself...
  13. Fixing a theory to match observation is to accept the observation. You did say: And I said: Remember ?
  14. He wanted to achieve a stationary universe and the equation in itself is 'unstable'. It's all in the link I provided... But when Edwin Hubble showed that the universe appeared to be expanding, Einstein removed the cosmological constant and called it the "biggest blunder" of his life.
  15. How about this place ? -> http://www.indiadaily.com/comp.asp This story: -> http://www.sciencedaily.com/releases/2007/10/071012160144.htm Not Just Science Fiction: 'Electromagnetic Wormhole' Possible, Say Mathematicians Is twisted into this: -> http://www.indiadaily.com/editorial/18516.asp Extraterrestrial UFOs - gravity wave driven wormholes provide intergalactic space travel while electromagnetic wormholes provide stealth and fast navigation around the earth Other wierd headlines today: The parallel universe of anti-matter – part of you is in there and you communicate with your other part all the time Signs of extraterrestrial civilization in tiny galaxy six billion light-years away found through gravity lensing India plans chemical mapping of the moon, mars, and beyond – why is India shying away from manned missions? Want to see how Type IV extraterrestrial civilization created the planet earth? Look towards a young star called HD 113766 only 424 light-years A naked singularity in the center of our galaxy – the unpredictable phenomenon can destroy human civilization any Reason why the extraterrestrials resist human exploration of the outer space – bacteria become deadly in the space
  16. Your link is bad, it should be: -> http://www.foxnews.com/story/0,2933,299857,00.html I think it's already discussed here: -> http://www.scienceforums.net/forum/showthread.php?t=28848
  17. http://en.wikipedia.org/wiki/Hub_dynamo
  18. AFAIK: Einstein did accept the expansion: http://en.wikipedia.org/wiki/Cosmological_constant
  19. I like the idea of painting it, using the Sun to gently and slowly push it, but it requires a lot of time. http://en.wikipedia.org/wiki/Yarkovsky_effect But of course, a spacecraft with large mirrors could be used several times, against multiple threats.
  20. Well, I didn't actually call the probability distribution for Magic, what I meant was the lack of explanation of how the particle manages to pass the barrier could be viewed as Magic. Because we had determined it's position. (Quantum indeterminacy doesn't explain how, it only describes what we observe, but I'm no expert either.) I guess, I am one of those who feel the need for an explanation, like the concept of "borrowing" energy.
  21. Well, maybe you should try to suppress your imagination a little and focus on the discussion instead... Actually, I am not even able to interpret wether you agree or argue the quoted part of my post. (That could of course depend on my skills in the English language.) I seriously doubt that the observations of falling object was random before Newton's theory of gravitation. (People knew that something dropped would fall to Earth before 1666, even animals like my dogs know it.)
  22. NASA Extends Mars Rover Mission a Fifth Time http://www.space.com/missionlaunches/071015-marsrover-extendedmission.html
  23. A lot of people come here and tries that, why would you be different ?
  24. Hard Science Fiction is a category of science fiction characterized by an emphasis on scientific or technical detail, or on scientific accuracy, or on both. You might find some good stories here: -> http://www.hardsf.net/
  25. Since I don't know much of quantum mechanics, I have failed to acclimate to its wierdness... If a particle is moving from one side to the other side of a barrier, without penetration, it sounds like Magic to me. (EDIT: Without a 'classical' explanation of how it manages to get there. )
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