-
Posts
5,244 -
Joined
-
Last visited
Content Type
Profiles
Forums
Developer Articles
KSP2 Release Notes
Everything posted by PB666
-
They are using thw wrong platform, the F22 has high thrust to mass ratio, which means it can gain velocity on the ascent, release and and stick backwards allowing the rocket to fire remotely. The fuel issue is a petty issue IMHO.
-
That was my thought, but the problem i have found with the old forum is searchability of a tpoic, in some cases i never could recover information that i knew was posted because of the poorish search engine. If we come up with some guidelines then the tags would make searching material much easier.
-
gonna is not a word, going to is two words. Hey, ok the new forum has problems, we need to work with sys ops to fix the problems.
-
I was looking at the tags thing today, trying to give my threads tags and soon ran into the problem what are the best tags. One rule, loose the word science in the tags, since this is a science group adding ...... science' is probably redundany for example: 'Atmospheric' prolly suffices as a tag The other problem is nouns as tags For example: universe. Technically this might be Holo-universal observations, or it could be CMBR, but CMBR does not cover pre-reionization nuetrino emmisions. (double tag) galaxy or (extragalactic). Technically this would be extragalactic observations but that seems too long. Weapons. Technically this would be Space weapons, but we can assume that weapons in this group would entail a space use aspect. Before we get to far into the tagging we should have a consensus as to what is good etiquette?
-
Silver is dwindling because of price failures of the last 2 years, its part of the commodity price cycle. Global demand is weak, much of the developing world that where demanding copper and silver have slowed demand and since we are probably closer to the end than the start of commodity price weakness we expect there to be dwindling inventories. http://www.nasdaq.com/markets/silver.aspx?timeframe=5y Here is the graph for platinum http://www.nasdaq.com/markets/platinum.aspx?timeframe=5y
-
How climate change alters regional climate in unpredictable ways
PB666 replied to PB666's topic in Science & Spaceflight
Three links 1. Dangerous lakes forming on the side of mount Everest. The highest peak in the world is now being effected by warming. 2. A graphic displaying aspects of climate change 3. Obama says http://www.bbc.com/news/science-environment-34928569 http://www.bbc.co.uk/news/resources/idt-5aceb360-8bc3-4741-99f0-2e4f76ca02bb http://www.bbc.com/news/science-environment-34960051 I should point out that if we follow the guidance (India has already said it will not) we are due for a 2.7'C increase over pre-1980 global mean average. I think the point of these is this, stop arguing with the climate change deniers, they are living a pre space-age belief, you can't change the mind of someone who is wantedly ignorant. The whole point of the thread is that climate change is here, its effects are often unpredictable and that those effect will increase with time. The argument that CO2 produced today does not have an effect for 15 years is rationally true, the effects are both today and in the future. At any moment we are producing C02 and the environment is absorbing C02 as part of the dynamic equilibrium, and this makes it appear that today's CO2 is not acting today. But this actually reveals is that the impact say of Chinas multifold increase of coal burning may not be fully felt for a decade, at a time when they will have to cut coal production and clean their air, this could result in shocking rises in the temperature of north pacific causing potentially devastating floods in places now suffering from historic droughts. Ultimately what goes into the pacific depths must come up and this does not bode well for certain parts of the US. Overall, regional climatology is set to change, dramatically, it is already changing but the swings that regions experience will alter things like decadal flood plains (25, 100, 500, 1000 year) will, in most places increase in size. Decadal drought probabilities, increase in frequency, magnitude for decadal drought events. Coastal erosion, increase rates of coastal erosion in many places, riparian evolution will increase in rate for many rivers resulting in property loss, man-made dam failures will increase in frequency, .. . . . More money will need to be spend on flood plain and coastal remediation, water plans and water projects, evacuation plans and disaster support, etc. -
Were we about something. hmmmm.. I limited my topics to science or science speculation germane to space exploration. This included Propulsion systems. Astronomy and astrotechnolgies Atmospheric science (though I have generally avoided threading topics that are largely earth specific) Planetary science and physics Relativistic physics Quantum mechanics Materials chemistry (either with regard to space age technologies or planetary chemistry) Xenobiology and early evolution of life on earth. A subset of post have to do with game development and computer science (only because the mods pushed the topics here) But people have posted on science I noted but did not thread Immunochemistry Paleoanthropology Human illnesses (such as type II diabetes) Various bugs (more or less not connected to mars life) Mathematics (such as how to estimate an elliptical orbit by solving the coordinate/time issue for a two-body problem assuming 2 point mass sources) Social behavior (Laws of mass action as it applies to sociology) Politics of science investiment Airplane crashes (was a rudder section from a hijacked 777, which apparently one moderator (Sal_vager) did not like my opinion of what happened with AF447 and censored me)
-
Some of the titles have morphed ∆V in a human? meant to say how much delta V in a human, apparently.
- 244 replies
-
- insert image
- attach image
-
(and 3 more)
Tagged with:
-
The changeover screwed up the title, its should be Delta as in dV
-
What Scotius said. Basically they are still in the technology testing and vetting phase, and because is deals with human life support, these guys are going to take their good sweet time. This is more the consequence of the Challenger/Columbia disasters than anything else.
-
http://stgist.com/2015/11/asteroid-mining-and-space-refueling-stations-may-become-a-reality-by-2025-5886
-
Noticing in the science forum that the metatags like [chemistry] and [spaceflight] did not carry over, instead we have tags, i wonder if it would not be better to carry the old tags forward and also allow group moderator to filter the tags.
-
When a radioactive atom in a molecule decays, are the bonds kept?
PB666 replied to a topic in Science & Spaceflight
Uranium hexafloride as far as i know is an ionic bond the electron density is almost entirely on the fluorine atom. Fluoride as everyone will recall is the most electronegative of all atoms, it wants to hold on to those electrons as tightly as it can. When uranium degrades, there is a possibility there is some electrons kicked form fluoride's outer electron shells. For the most part the fluoride will hold onto there electrons, and some decays will have no fluoride changes; howver we have to remember that this is a salt so electrons can conduct across the salt and a few decays will kick off electrons and this will cost localized electric current. -
How climate change alters regional climate in unpredictable ways
PB666 replied to PB666's topic in Science & Spaceflight
[quote name='WedgeAntilles']I already did. It's already known fact that more CO2 isn't going to do jack squat. Earth has [B]already[/B] proved this. As I explained more than once already: the Earth would be several degrees colder with no CO2 in its atmosphere. Thirty degrees colder with no greenhouse gases at all. Doubling CO2 from its pre-Industrial levels [B]DID NOT RAISE EARTH'S TEMPERATURE BY ANOTHER SEVERAL DEGREES.[/B] More than doubling all of Earth's greenhouse gases (methane is somewhere around quadruple its "normal" level) [B]DID NOT RAISE EARTH'S TEMPERATURE BY ANOTHER 30 DEGREES.[/B] I simply can't simplify it any more simply. Increasing the planet's CO2 from current levels will do next to nothing, because past increases in the planets CO2 have already done next to nothing. Diminishing returns. Fact.[/QUOTE] Uh look ALLCAPS and [B]bolded[/B], this is certainly the sign of a master debater in action. Folks this fellow is scoring on the good ole usenet ____ index now, might just let the thread die rather than waste more time with him. -
[quote name='MircoMars']p'n'p drivers, searchindexer, spoolsv, perhaps even network drivers and what else I find I noticed that in normal mode, my hdds are active for another 2 or 3 minutes after boot-up. in save mode my pc stops rattling shortly after all desktop items are loaded. I'd rather have a save mode + stuff I need than a normal mode in which I have to manually look for background activity... do I wish for too much or don't see the obvious solution? hach.... I long for simpler times...[/QUOTE] Those are prolly antivirus def and rtprot files that are loading.
-
What if the Columbia Disaster never happened?
PB666 replied to fredinno's topic in Science & Spaceflight
[quote name='Alias72']No. The entire concept of a plane-style RV was proven uneconomical within the first decade or two of the shuttle. The idea was that shuttle would partially cover its cost by partnering with companies for satellite maintenance and orbit adjustment but the cost was ridiculously prohibitive, no one needed the service, and the soviet union collapsed adding a vast number of cheap launch systems to the market. by 2002 the United States had lost virtually all of the commercial space market to Europe and Russia. The shuttle was not truly re-usable. The shuttle was difficult to maintain. The shuttle was overly complex. The shuttle was uneconomical. The shuttle was a failure. Colombia doesn't change this it merely quickens the death of the shuttle somewhat. Also keep in mind how old the shuttles actually were. When they were created the idea was to learn more about the economic and technical difficulties of space-planes. Lesson learned.[/QUOTE] The shuttle is the second most successful failure ever, behind the Soyuz which was the most successful failure ever. What an _____. If the shuttle was a failure, everything is a failure, KSP is a failure, the earth is a failure. -
[IMAGE THREAD] Post your dumb Spacecraft/Rocket Concepts Here!
PB666 replied to fredinno's topic in Science & Spaceflight
[quote name='Gaarst']Not my concept, but still... [URL]http://s.hswstatic.com/gif/space-shuttle-launch3a.jpg[/URL][/QUOTE] Booooo. -
How climate change alters regional climate in unpredictable ways
PB666 replied to PB666's topic in Science & Spaceflight
[quote name='llanthas']Apparently, the entire state of North Carolina has stuck its fingers in its ears and started saying "LALALALALALALAALALALALLALAL"[/QUOTE] Well, you have to kniw that the party of abraham lincoln has evolved into the party of Ned Ludd -
How climate change alters regional climate in unpredictable ways
PB666 replied to PB666's topic in Science & Spaceflight
[url]http://www.bbc.com/news/world-us-canada-34872956[/url] What they call extreme heat we call a summer day in Texas. Most of the state is uninhabitable for cities without air-conditioning, if your air conditioning breaks, go to work, a shopping mall or a hotel. Where I am, i've recorded 112'F (44.5'C) in the shade, for some that's hot, for others its not. The only time I have seen a hotter temperature was in needles California at a gas station, it was 115F (46C) degrees. The bigger danger is drought and the Edward's aquifer. -
Could a far-out dwarf planet have a thick hydrogen atmosphere?
PB666 replied to SmartS=true's topic in Science & Spaceflight
you have put alot of thought into this. Hydrogen has a molecukar weight of 2.0394 and it does have a boiling point close to absolute zero at sp. The criteria are then its molecular weight and propensity to boil. So if the planet has sufficient enough gravity to keep hydrogen close to the surface and increase surface pressure that hydrogen is at the transition point it will keep hydrogen longer. If not vaporization pressure and ambient velocity, remember as a gas hydrogen moves the fastest, hydrogen escapes. Because of the dwarf planets are not a good choice, and solar winds suffice to blow hydrogen off the planet just as has happened to atmosphere of mars. That is the second solution, to have a strong magnetic field of that deflects these winds. This means that the planet has a molten core to complete a dynamo. THis means the planet is large enough to have a molten core. Therefore the second solution requires a large central body. -
[quote name='Vanamonde']Is there enough chemical energy in the planet components to, when converted into self-destructing nanobots, overcome escape velocity and expel matter from the location of the planet? Because if not, you'll have a big boom and then all the mass will settle down into a ball again. Whether in the form of rock, bots, or debris, mass is mass and will exert the same intensity of gravity.[/QUOTE] No, since most of the planet is iron the are no differentials. You would have to begin dumping large amounts of nuetrons into the core in hopes of converting them to iron, a very stable isotope, into something that undergoes fission, and then hope you can do that fast enough so that the entire core goes prompt critical. The problem is that there are few isotopes or fission pairs that combined energy is less than iron. It means you would have to add more energy in nuetrons than you would get out of that blast. Their is an easier way that does not require going to the core, just find a nuetron star and open a wormhole that points to the core and the nuetron star.
-
[quote name='llanthas']Occam's razor is gonna come down hard on this. Just sayin'...[/QUOTE] black holes?
-
Did you believe in Nibiru planet and Anunaki?
PB666 replied to Pawelk198604's topic in Science & Spaceflight
[quote name='Bill Phil']I watch it from time to time. It's enjoyable, but not all that believable. It's funny and can be thought provoking at times. I like how they always leave the conclusion to the viewer.[/QUOTE] Its one of the reason i don't have cable TV, cable TV is 1000 channels of 'waste of time'. -
Did you believe in Nibiru planet and Anunaki?
PB666 replied to Pawelk198604's topic in Science & Spaceflight
They can afford to say such things because they sell, there are theories like the hollow-earth theory, edgar casey, pyramid power, chariots of the gods. All this sells to an appropriately vulnerable population, ive got several boxes of like material i recently inherited, take $50/box (about 20 books to the box) + shipping. People want believe that there is a higher power that will rescue them from a somewhat apparent mortality. The gods of mesopotamia were original founders of cities, which eventually formed states, each state had its own set of gods and with wars, marriages, whatever they developed pantheons. Murdoch was the father of what we call el, as in Isra'el a variant of al as in ba'al, for example in the story of job the story was probably originally written abou 'al, its largely a cannanite story and depicts life along the upper euphates. Sin is the moon god, associated with wisdom and sexual pleasure, the patron god of Ur. The gods gave people hope and the stories and story tellers brought hope and excitement to their lives. It does the same thing today. It does not matter whether its true, its plausibly consistent with a few facts and it is exciting. The believer is greatful and pays a few tokens of graditude, or in the case of some, a rediculous portion of their income, in hopes of having the knowledge to unmask the bringer and taker of life. -
[url]http://earthsky.org/space/a-nearby-dark-matter-galaxy-triangulum-ii?[/url] I was trying to find a clever title for this thread, but there is nothing really clever. A dark matter galaxy is an oxymoron. If stars are circling a core, then its a galaxy. The claim is that the relative mass is much higher than the visual would predict, based on estimating the velocity vectors of marker stars.