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Difference between vapor and gas The term gas refers to a substance that is in its gaseous form or a substance that has a single defined thermodynamic state at room temperature whereas a vapor refers to a substance that is a equilibrium between two phases at room temperature, namely gaseous and liquid phase. All matter on earth exists in any of the three states: solid, liquid or gaseous. 'Gas' refers to a substance in the gaseous state. Gases do not have either shape or volume. However, the term 'vapor' or 'vapour' refers to a substance in equilibrium between two phases, usually liquid and gaseous. Vapor is not a state of matter but is a specific type of gas. Gases are in a gaseous state at room temperature. The molecules in a gas can expand to occupy any available volume as there is very little inter molecular attraction. On the other hand, the molecules of a vapor gain energy and vaporize from a substance which is either a solid or liquid at room temperature. For example, steam is a water vapor that turns into water at room temperature. Oxygen, which is a gas, will still be a gas at room temperature. Gas is a state of matter. Vapor is not, it is constantly in transition. An easy way to distinguish between vapor and gas is that vapor is something that can be seen or smelled or something that settles down on the ground, while one cannot see a gas but can only smell it. However, there are some exceptions to this classification, for example, water vapor. Water vapor cannot be smelt and it does not settle down on the ground.

Under just the right conditions-which involve an ultra-high-intensity laser beam and a two-mile-long particle accelerator-it could be possible to create something out of nothing, according to University of Michigan researchers.

Stubborn Belly fat can make your jeans feel extra snug, many can think how to lose belly fat, but really there is something way worse about in Health2day

If there is organic life deep under the ice on Europa, why would we need to disturb it at all? Potential source of unknown viruses etc. Risks of releasing something are low I guess, but the assumption that whatever may be there needs Earth-like conditions to survive and multiply is dangerous.

"I simply cannot believe that John Cook of Skeptical Science and psychologist Stephan Lewandowsky managed, in just 8 pages, to create something as magnificent as their new Debunking Handbook. It is packed not only with wonderful graphics, but also with a clear explanation of why many attempts to defeat misinformation fail, and what steps must be taken to do a better job. The core issue, of course, is one that I've written much about-too many scientists assume that that facts win out on their own, but that isn't actually true"

"In our recent paper, we take a different approach. We consider how measurements work in the macroworld, finding that some quantum features are simply unobservable. Most remarkably, this approach shows that something called quantum nonlocality disappears for objects big enough to contain roughly the Avogadro number of atoms-the number of atoms you'd expect in a few grams of matter."

"Everybody likes a simple cause and effect - something we can point to and say (ommitting a few choice words to the perpetrators), 'Fix this and the bees will be right again.' Reality is rarely so straightforward. As the bee decline has progressed I've lost count of the simple 'causes' that have been presented. Among the more memorable are: * mobile 'phones (the absolute 'definite cause' of choice a couple of years ago) * mobile base stations, power lines and other strong electromagnetic sources (a perennial favourite for any malaise) * alien abduction (hopefully they have smaller probes for abducted bees...) * God's punishment (pro gay-marriage states in the USA have more cases of CCD) Leo's article shows neonicotinoids are at least a plausible candidate and they are surely not good for bees, but the argument for these being the explicit 'cause' of global bee decline is still not particularly strong. The risk here is that the media and vocal lobbyists are going off on a righteous crusade to the detriment of more diligent, and maybe less newsworthy, efforts to get to the root of a complex problem. Rather than reviewing the evidence here, I recommend a visit to Randy Oliver's website where his two recent articles from the American Bee Journalon this topic can be found, along with some further commentary on his home page. Interested readers can also directly access the study by Henry et. al. (2012a), the commentry on this study by Creswell and Thompson (2012), the response to the comment (Henry et. al. 2012b) and to the meta-analysis of toxicological studies on imidacloprid by Creswell (2010). An example of one such study is Cutler and Scott-Dupree (2007). Links to all are included below. These are original material rather than reportage and demonstrate the complexity of the issue. As food for thought, I'll leave you with the following: * Neonicotinoids are widely used in Australia and our bees are not (yet) in decline."

"Note that the antimicrobial peptides are produced largely in the fat bodies-so there would be less of this sort of response in forager bees, which don't maintain their fat bodies. This makes sense, since foragers aren't expected to live for long. However, keep in mind that the bees in protein-hungry colonies are unable to develop their fat bodies fully-this one point where nutrition ties in to immunity. Surprisingly, Jay Evans found that these genes are not upregulated in bees from CCD colonies, even though the bees are full of pathogens! There are a few potential explanations for this finding that come to mind: The bee hemocytes are not recognizing the pathogens as foreign (suppression of recognition systems, perhaps by viruses?). The colonies could be protein-starved. Something is suppressing the transcription of the genes, or their translation to peptides. Note that viruses can do this very thing, which I feel may be a big clue!"

"The best learning experience. That means something different for everyone. Expect more than an old one-size-fits-all LMS. Brightspace is an online teaching and learning platform that's easy, flexible, and smart."

"ScienceDaily (Aug. 31, 2010) - There's something beyond plain old ignorance that motivates Americans to believe President Obama is a Muslim, according to a first-of-its-kind study of smear campaigns led by a Michigan State University psychologist."

A very strange fringe science piece that I'll talk about in a bit (see next link, one place up on my profile): somebody claims to have found an ancient stone circle under the Lake that, as one looks at it, doesn't seem very circular. Thinking that somebody might be a little desperate to find something to publish.

Researchers attempting to create something reminiscent the earliest life, based on RNA instead of DNA, achieve a success.

Is there something special about exact supersymmetry that precludes complex life?

"Jewel beetles" are widely known for their glossy external skeletons that appear to change colors as the angle of view changes. Now they may be known for something else--providing a blueprint for materials that reflect light rather than absorbing it to produce colors.

Is warfare really an immutable part of our nature, or is it something we can overcome? Some researchers now suspect the latter

For anyone who's ever forgotten something or someone they wish they could remember, a bit of solace: Though the memory is hidden from your conscious mind, it might not be gone. In a study of college students, brain imaging detected patterns of activation that corresponded to memories the students thought they'd lost.

"A lawyer is trying to convince a jury that his client really is crazy. It's usually a tough argument to sell in a court of law. But what if the lawyer has a picture of his client's brain that shows there's something biologically wrong with it? Can that evidence help persuade a jury? Should it even be allowed as evidence?"

"When biologist Anthony Cashmore claims that the concept of free will is an illusion, he's not breaking any new ground. At least as far back as the ancient Greeks, people have wondered how humans seem to have the ability to make their own personal decisions in a manner lacking any causal component other than their desire to "will" something. But Cashmore, Professor of Biology at the University of Pennsylvania, says that many biologists today still cling to the idea of free will, and reject the idea that we are simply conscious machines, completely controlled by a combination of our chemistry and external environmental forces."

Caleb Charland is a Maine-based photographer who combines a love of scientific experiments and photographs into wonderful and amazing photographs. If Isaac Newton or Benjamin Franklin were into photography, their photographs might look something like these:

It sounds like something a guided missile would do. Foxes seem to zero in on prey using Earth's magnetic field. They are the first animal thought to use the field to judge distance rather than just direction.