| Subject | Date Asked |
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| Air Visability | 11/25/2009 |
Q: I do not know if I am asking the right person or subject, but here it goes. Can air be seen? If so. ...
A: Pure air, by definition, is an odorless, colorless, invisible gas at standard conditions of ...
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| Planetary elongation, declination and effects on earth's orbit | 10/22/2009 |
Q: Do other planets' elongation/declination conjunctions to each other cause any changes to or affect ...
A: Over millions and billions of years, Yes, there can be slow, very minor changes, barely measureable. ...
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| Can we see atoms? | 10/12/2009 |
Q: Can we see atoms? If it is yes. How can we see them?
A: Not with the naked eye of course, but yes, using either a field ion microscope, or a scanning ...
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| Earth science and space | 10/7/2009 |
Q: Given that, at the same time, on one side of the planet in country A it’s Summer and on the opposite ...
A: No. On Jan 1st when it's winter in the United Kingdom (and the Northern Hemisphere) then it's ...
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| science | 9/3/2009 |
Q: what is the most modern model used to depict an atom
A: The best I can determine is a tiny planet (nucleus) surrounded by an atmosphere, called the electron ...
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| what really happens | 9/2/2009 |
Q: is there any true things on what happens after somone dies?? i dont really beleive the religion ...
A: Kind of an "off topic" question, isn't it? Be that as it may, the honest answer is.... no one ...
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| Finding magnetic north | 7/15/2009 |
Q: Tom, I would like to know a good method of determining aprox. magnetic north without using a ...
A: Well, then you really want true north, not magnetic north. We only use magnetic north when there is ...
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| Finding magnetic north | 7/14/2009 |
Q: Tom, I would like to know a good method of determining aprox. magnetic north without using a ...
A: I guess you could float a magnetized steel needle on a pan of still water (surface tension would ...
|
| Ice Engine | 7/11/2009 |
Q: Will you please help me with some suggestions on how to build my invention, the ICE ENGINE? Here ...
A: In theory, a very good idea - A (highest grade in the USA) for your effort. In practice, see #4 ...
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| dark matter | 7/7/2009 |
Q: What is dark matter? How it works? AnotherHow the earth revolve around the sun in an elliptical ...
A: No one knows what dark matter is, as yet. (Even science cannot know the unknown). We only know ...
|
| Science | 6/21/2009 |
Q: Is it possible to suspend a human between earth and space (if one did not move or do any other body ...
A: Theoretically, and I guess actually, yes. It's possible to place a body (spacecraft) at the correct ...
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| Uncertainity Principal | 6/8/2009 |
Q: According to quantum theory, 'the universe originated as a bubble of false vacuum in quantum ...
A: Yes, well I'm not making anything up...I recently read it somewheredealing with the Casimir Vacuum ...
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| Uncertainity Principal | 6/8/2009 |
Q: According to quantum theory, 'the universe originated as a bubble of false vacuum in quantum ...
A: Brent, Well, we don't know for sure, but...I guess I could ask the reverse, how do we know that it ...
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| passive solar energy and the impact of solar flares | 5/15/2009 |
Q: Can you entertain a particular question regarding the affect of solar flares on passive solar energy ...
A: Solar flares and other solar surface activity like CME's (Coronal Mass Ejections) which happen to ...
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| Theories | 4/24/2009 |
Q: Why is it important to continue to test the existing theories in science [mainly on the solar system ...
A: Well, I sort of thought that it was a school question...sorry your teacher, or textbook, was so ...
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| Theories | 4/23/2009 |
Q: Why is it important to continue to test the existing theories in science [mainly on the solar system ...
A: Specifically, what theories are you thinking about? I think we've pretty much proven that the sun is ...
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| space | 4/9/2009 |
Q: Is there any way that prevent black hole forming
A: For size differential, our sun contains 99.86% of the mass in the Solar System, and we can fit about ...
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| what seperates us from the other animals | 3/30/2009 |
Q: by saying that the empty void have energy and since we have infinite empty void do we have infinite ...
A: Well, as I said earlier, who says that other animals on the planet WANT to create stuff like that? ...
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| what seperates us from the other animals | 3/30/2009 |
Q: by saying that the empty void have energy and since we have infinite empty void do we have infinite ...
A: Well, we're kind of getting out of my field of expertise here.... I'm not real strong on biology or ...
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| negative energy of the nothing | 3/29/2009 |
Q: by saying that the empty void have energy and since we have infinite empty void do we have infinite ...
A: Yes, that is quite possible and has been already mentioned and thought of, that there are other "Big ...
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| amore complex question | 3/28/2009 |
Q: while you were answering my questions more than one time you referred to the big bang theory which ...
A: So, what theory do you recommend? (Without invoking a theological event).....which is what a layman ...
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| maximum height from earth, at which baloon went | 3/28/2009 |
Q: tom whitting, i am munsif ali from pakistan. today, a question came to my mind, i.e. upto what ...
A: On the internet, I found this article at ...
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| amore complex question | 3/28/2009 |
Q: while you were answering my questions more than one time you referred to the big bang theory which ...
A: Doesn't matter how it happened, or how it came about, or what existed before the fact, or even what ...
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| amore complex question | 3/27/2009 |
Q: while you were answering my questions more than one time you referred to the big bang theory which ...
A: We have no idea what's beyond the current known visible Universe (or it's unlikely we can ever find ...
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| dark matter | 3/27/2009 |
Q: I honestly don't know if its an astronomy subject or physics but i read that the void in space is ...
A: Yes, stored anti-matter would make the ultimate bomb (or the ultimate rocket propulsion fuel - ...
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| dark matter | 3/26/2009 |
Q: I honestly don't know if its an astronomy subject or physics but i read that the void in space is ...
A: Anti-matter is simply normal matter with a different charge, electrons (called positrons) are ...
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| dark matter | 3/25/2009 |
Q: I honestly don't know if its an astronomy subject or physics but i read that the void in space is ...
A: Well, it's a combination of both physics and astronomy question. No one has any idea of what the ...
|
| More about black holes | 3/24/2009 |
Q: I am really sorry to bother you with too many questions, but i am really interested in this subject ...
A: Black holes don't form FROM a singularity, they become the singularity when a neutron star is ...
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| Black Holes | 3/24/2009 |
Q: Can you tell me about how they get formed and what is there properties and do they last forever or ...
A: Yeah, but that high mass at the core of a black hole is a pinpoint...called a singularity. (So a ...
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| Black Holes | 3/23/2009 |
Q: Can you tell me about how they get formed and what is there properties and do they last forever or ...
A: The mass of black holes varies, but all of them are very massive compared to our Earthly equivalents ...
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| Black Holes | 3/23/2009 |
Q: Can you tell me about how they get formed and what is there properties and do they last forever or ...
A: Black holes form when a tremendous amount of mass is compressed and condensed beyond a critical ...
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| 2012 | 3/14/2009 |
Q: Do you think 2012 is the end of the world? I am scared about this topic.
A: ABSOLUTELY NOT! Your fears are totally unfounded. Instead of reading scary websites and National ...
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| time and lightspeed | 2/27/2009 |
Q: If, for example, a star is 5 light years away and someone were to travel to it; the people on Earth ...
A: The clock onboard the spacecraft going near light speed will slow down (relative to the Earth's ...
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| time and lightspeed | 2/26/2009 |
Q: If, for example, a star is 5 light years away and someone were to travel to it; the people on Earth ...
A: For the person traveling to the star 5 ly distant (assumingthat they are up near light speed, say ...
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| earth and space | 2/18/2009 |
Q: what would happen if the Earth stood still? Thanks in advance for the answer ANSWER: Hi Bonnie, ...
A: Ok, that's better (for a crazy and impossible thing to do...hypothetical question, because the Earth ...
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| earth and space | 2/17/2009 |
Q: what would happen if the Earth stood still? Thanks in advance for the answer
A: Stand still with respect to revolution about the sun or "stand still" with respect to rotation about ...
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| Time | 2/17/2009 |
Q: Myself Yogesh Patwardhan, I am from India... I think & believe that time is nothing but a concept. ...
A: Time is both a concept, a definition, and a real (not imaginary) physical quantity. And time is not ...
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| time paradox | 2/14/2009 |
Q: what is ans of enstines twin paradox??
A: The Einstein twin paradox isn't really a paradox, it's something that actually would happen IF we ...
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| gravity | 2/10/2009 |
Q: why there is gravity and why gravity cannot be reversed?
A: Using Einstein's General Relativity (circa 1919) gravity is caused by the presence of a mass, ...
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| volcano | 2/4/2009 |
Q: a major volcano and earthquake are encircles the ------- ocean what ocean
A: You mean the word "area", not 'are'.... Encircles the PACIFIC Ocean, also called the "Ring of ...
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| weight comparisons | 12/31/2008 |
Q: in pounds, what would be be the equivalent of 535 pounds on earth to the planet Mars
A: Mars is a rather small planet of only 4200 miles in diameter compared to the Earth's about 8000 mile ...
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| Dirt | 11/29/2008 |
Q: When you dig a hole, how is it there is never enough dirt to fill the hole, even when you place ...
A: Perhaps you wait too long to return the dirt, and it dries out (loses moisture) somewhat. I would ...
|
| ice | 11/11/2008 |
Q: one night i had some ice in a glass. on waking the ice was still intact,or at least some of it.can ...
A: Well, maybe you didn't sleep that long. On the other hand, both glass and water are good insulators. ...
|
| science experiment measuring temperature of golf ball | 11/10/2008 |
Q: My son is doing an experiment for science class. He wants to see if the temperature of a golf ball ...
A: Actually there IS a device that can determine the temperature of a golf ball (or anything ...
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| science experiment measuring temperature of golf ball | 11/10/2008 |
Q: My son is doing an experiment for science class. He wants to see if the temperature of a golf ball ...
A: Travel? By what means? Hit by a trusting (Ha!) human with a golf club? Dropped from an airplane? ...
|
| NATURAL SCIENCE | 10/7/2008 |
Q: WHY AN OBJECT ALONG THE MERIDIAN IN THE SOUTHERN HEMISPHERE IS DEFLECTED TO THE LEFT?
A: It's all due to the Coriolis effect, because the Earth rotates, see ...
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| specific gravity | 9/19/2008 |
Q: What is the specific gravity of the dead sea? I read it is 30% saline and I know you float like a ...
A: I simply googled 'Specific Gravity of Dead Sea' and came up with several results, the most promising ...
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| Universe | 8/23/2008 |
Q: Is universe finite? I know that Ainstain proved that and also is all the content in the universe ...
A: Einstein never mentioned that our Universe was finite....he stated that he originally thought it was ...
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| Do our senses really perceive the real world? | 7/9/2008 |
Q: I have read article from some webiste...and I have some issue concerning the existence of science ...
A: There are actually two world systems, the laws of the macroworld (gravity, our typical physics and ...
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| Do our senses really perceive the real world? | 7/8/2008 |
Q: I have read article from some webiste...and I have some issue concerning the existence of science ...
A: (Why did I initially think this question was from you?) Ok, rather than using science, I'll put the ...
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| MAINTAINING A HUMAN IN FIXED HORIZONTAL POSITION IN ZERO GRAVITY | 7/6/2008 |
Q: IS IT POSSIBLE TO CREATE A ZERO GRAVITY CONDITION AND POSITION A HUMAN HORIZONTALLY AND KEEP THE ...
A: Best of luck with the patent....I only ever had one, a telescope simulator, but I never did anything ...
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| MAINTAINING A HUMAN IN FIXED HORIZONTAL POSITION IN ZERO GRAVITY | 7/6/2008 |
Q: IS IT POSSIBLE TO CREATE A ZERO GRAVITY CONDITION AND POSITION A HUMAN HORIZONTALLY AND KEEP THE ...
A: Unfortunately your view of natural gravity is about 90 years old; with Einstein's General ...
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| MAINTAINING A HUMAN IN FIXED HORIZONTAL POSITION IN ZERO GRAVITY | 7/6/2008 |
Q: IS IT POSSIBLE TO CREATE A ZERO GRAVITY CONDITION AND POSITION A HUMAN HORIZONTALLY AND KEEP THE ...
A: On Earth? No. In space, yes, but not for an indefinite time, like at the International Space ...
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| Hydrogen | 7/4/2008 |
Q: How many amount of Hydrogen gas can evolute when 1 ton of sea water by electrolysis?
A: One ton (english) is 2000 pounds which is 909 Kg. Water is molecular weight of 18 (Oxygen is 16, ...
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| Does every human taste receptor work differently? Do we enjoy the same kind of taste sensation? | 7/1/2008 |
Q: I understand no human taste receptor work exactly the same,does all the normal human taste receptor ...
A: I again, would have to answer your new question the exact same way as the previous one. As there is ...
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| What is light? | 6/30/2008 |
Q: Ive been trying to explain to my 3 kids EXACTLY what light is, or is made of, or how it works, and ...
A: ... Tough to answer this question for a child. Basically light is a massless particle, which acts ...
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| Does every human taste receptor work differently? Do we enjoy the same kind of taste sensation? | 6/30/2008 |
Q: I understand no human taste receptor work exactly the same,does all the normal human taste receptor ...
A: Would there really be a definitive way (test) of knowing whether the taste and flavor of one person ...
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| Why metal heats faster than wood or plastic | 4/8/2008 |
Q: My 2nd grader has a homework problem. We put a wood spoon, a metal spoon and a plastic spoon in hot ...
A: All substances are either good conductors of energy or good non- conductors of energy (as some are ...
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| wood vs metal when heated | 3/23/2008 |
Q: I want to put a fence around a wood burning stove. Is it going to be cooler to use wood, metal or a ...
A: Well, there is also the small safety factor of burning your house down too. So I think screens are ...
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| circumference | 3/19/2008 |
Q: What is the circumference from pole to pole?
A: Polar diameter is 12,714 Km or very close to 7900 miles. (12714 Km x .6214 km/mile = 7900 miles). ...
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| equator | 3/19/2008 |
Q: What is the tilt of the equator?
A: Relative to what? The moon? The plane of the Milky Way? The Ecliptic Plane (which is the same as ...
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| Rock and Water Cycles | 3/4/2008 |
Q: How does Earth look different because of the rock and water cycles? How do these cycles affect ...
A: Well, with the water cycle, a water molecule doesn't change except for it's phase, from liquid to ...
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| Rock and Water Cycles | 3/2/2008 |
Q: How does Earth look different because of the rock and water cycles? How do these cycles affect ...
A: In reverse order, it's our weather, our atmosphere and ocean currents, and to some minor extent, ...
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| science | 2/21/2008 |
Q: explain how 2 species can compete for the same resorce even if they never come in contct with each ...
A: Lots of examples in nature...grizzly bears like to fish for salmon in the streams, and humans like ...
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| satelite | 2/20/2008 |
Q: i was wondering your opinion about the falling spy satelite? i have not heard much speculation about ...
A: Well, to begin with, don't lose any sleep over it. The world is 70% oceans, so all the odds would ...
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| science | 2/19/2008 |
Q: what are heavenly bodies?why is pluto not considered a planet?why do stars twinkle?
A: Heavenly bodies are just a general name for all bodies in space; stars, planets, moons, comets, ...
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| physics | 2/11/2008 |
Q: Disregarding physical bounds, if one were to extend a straw or a tube from sealevel up into space, ...
A: Yes, temporarily, but it would not be able to suck air out into space, if that's what you are ...
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| Inside earth | 1/30/2008 |
Q: I know it is impossible to do this because of the heat etc, but what would happen if you could ...
A: It's not just the heat that makes it impossible. It's the plastic, ductile nature of the upper ...
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| How fast does Earth travel | 1/29/2008 |
Q: How long does it take the earth to make one revolution round the sun? It takes it almost 3651 days. ...
A: Obviously a misprint or typo error. Someone probably forgot the /4 after the one. The real answer, ...
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| stratospheric ozone (follow-up) | 1/27/2008 |
Q: Ozone has a molecular weight of around 48 while oxygen molecule 36. So, why do O3 molecules, instead ...
A: Yes, ozone is very temporary because it is such a reactive and unstable molecule. As far as falling, ...
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| stratospheric ozone | 1/27/2008 |
Q: Ozone has a molecular weight of around 48 while oxygen molecule 36. So, why do O3 molecules, instead ...
A: In theory, you are correct, but ozone is formed when free oxygen atoms (O) react with oxygen gas ...
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| Solar winds | 1/17/2008 |
Q: Hey, can solar winds kill humans on earth or effect them? My interest started when a couple of guys ...
A: The solar wind is high energy particles and radiation emitted by the sun. We on the Earth are ...
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| time | 1/1/2008 |
Q: Is there a word for the same time of the same day. (12:15 am on December 15) or for the same age ...
A: Yes, the word is "coincidental" or, by coincidence. Realize all this stuff, our number system, ...
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| Viscosity/properties of fluids | 12/28/2007 |
Q: why does molasses move slowly
A: Viscosity is directly related to the molecular attraction and bonding of the individual molecules. ...
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| Calender | 12/19/2007 |
Q: How often are there five Fridays in February?
A: Well, just using simple logic and not cheating and looking at past calendars, we know it could only ...
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| Orbiting satellites vs meteor showers | 12/11/2007 |
Q: I have a question about something that has always been in the back of my mind but I didn't know who ...
A: Excellent question! Yes, you may want to mark your calendar, or just memorize them...the best ...
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| seasons and temp. | 12/11/2007 |
Q: Which factor play more of a role in determining the seasons? (Tilt of the earth's axis or the ...
A: Yes, your textbook is correct....the tilt of the Earth's axis of 23.5 degrees from the vertical, ...
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| atmospheric pressure | 12/3/2007 |
Q: hypothetically speaking, if there were no water in the oceans, would the human body be able to cope ...
A: Well, I'm not an expert on human body physiology, but being located 8 or 9 miles below sea level, ...
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| salt vs regular water | 11/24/2007 |
Q: my grandson has a Science project on measuring boiling salt and regular water and I would like to ...
A: .. Just about any kind of thermometer can be used for pure water and salty water, as long as the ...
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