Physics news

Henry J · Post by **Henry J** » Wed Aug 04, 2004 1:35 pm

New Way Of 'Seeing': A 'Neutron Microscope'

A prototype microscope that uses neutrons instead of light to “see” magnified images has been demonstrated at the National Institute of Standards and Technology (NIST). Neutron microscopes might eventually offer certain advantages over optical, X-ray and electron imaging techniques such as better contrast for biological samples.

Xjmt · Post by **Xjmt** » Thu Aug 05, 2004 5:58 am

Another microscope in use for many years now was also thought to be a tremendous breakthrough until it was discovered it's use damaged the eyes of the users. Any such feed back on such a conflict with this new system?

Henry J · Post by **Henry J** » Thu Aug 05, 2004 6:50 am

Huh. All I know about the neutron scope thingie is what was in the article.

Henry

Henry J · Post by **Henry J** » Thu Aug 05, 2004 7:51 am

Interesting webpage somebody referenced on another board:

Secret Worlds: The Universe Within

Henry

Xjmt · Post by **Xjmt** » Thu Aug 05, 2004 10:51 am

Here's another one I found:

http://marsoweb.nas.nasa.gov/landingsites/index.html

This site used to be for the pros but became so popular with the general public they're in the process of making it easier to navigate.

Let's face it. There's just too many interesting sites out there to catch up on them all.

Henry J · Post by **Henry J** » Sun Aug 08, 2004 6:11 pm

UC Riverside Researcher Takes Snapshots Of The ovement Of Molecules In A Billionth Of A Second

A team of researchers including University of California, Riverside Assistant Professor of Chemistry, Ludwig Bartels has developed a technique to take extremely fast snapshots of molecular and atomic movement. The development is considered a significant advance in surface science, the study of chemical reactions taking place on the surface of solids.

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Henry

Henry J · Post by **Henry J** » Tue Aug 10, 2004 8:09 am

Deeper-Diving Human Occupied Submersible To Replace Alvin

After 40 years of scientific research that led to the discovery of new life forms, helped confirm the theory of plate tectonics, and enthralled schoolchildren around the world with seafloor images and video, the research submersible Alvin will be replaced by a new, deeper-diving vehicle.

(This Alvin ain't no chipmonk!)

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Henry

Henry J · Post by **Henry J** » Fri Aug 13, 2004 11:40 am

Detecting The Spin Of A Single Electron

[Scientists] have demonstrated the ability to detect the spin of a single electron in a standard silicon transistor.

Henry J · Post by **Henry J** » Mon Aug 30, 2004 8:59 am

The Cosmic Revolution: Task Force Outlines Role Of Particle Physics In A New Universe

A string of recent discoveries in astronomy has left scientists with an unsettling realization: The stuff we know and understand makes up less than 5 percent of the universe. The rest has to be yet-unknown forms of "dark matter" and "dark energy."

The Nine Questions

I. Einstein's dream of unified forces

1. Are there undiscovered principles of nature: new symmetries, new physical laws?

2. How can we solve the mystery of dark energy?

3. Are there extra dimensions of space?

4. Do all forces become one?

II. The particle world

5. Why are there so many kinds of particles?

6. What is dark matter? How can we make it in the laboratory?

7. What are neutrinos telling us?

8. How did the universe come to be?

9. What happened to the antimatter?

(What happened to the antimatter? Don't look at me; I didn't take it!)

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Henry

lswot · Post by **lswot** » Mon Aug 30, 2004 11:30 am

You mean THEY are admitting there are things THEY don't know?

Uh, what is Einstein's dream of unified forces?

Um......"Let the Force be with you!" .....sorry, couldn't resist.

Henry J · Post by **Henry J** » Mon Aug 30, 2004 12:59 pm

Re "what is Einstein's dream of unified forces? "

Once force to rule them all, and in the darkness bind them.

Or something.

Xjmt · Post by **Xjmt** » Mon Aug 30, 2004 2:12 pm

lswot wrote: You mean THEY are admitting there are things THEY don't know?

Uh, what is Einstein's dream of unified forces?

Um......"Let the Force be with you!" .....sorry, couldn't resist.

Hmmm...Well if they're no longer claiming to know everything then they must already be out of school.

"Unified, Forces, Dream"......does this have anything to do with that "Girls Gone Wild" video I've heard about??

"Let the force be with you..." 'specially when you're trying to open the pickle jar.

lswot · Post by **lswot** » Tue Aug 31, 2004 11:15 am

Henry J wrote:Re "what is Einstein's dream of unified forces? "

Once force to rule them all, and in the darkness bind them.

Or something.

Oh......

This must be akin to Temporal Mechanics.....since I feel a headahce starting.

Henry J · Post by **Henry J** » Tue Aug 31, 2004 11:25 am

Okay, but who's gonna clean that up?

Henry J · Post by **Henry J** » Tue Aug 31, 2004 11:28 am

Anyhoo, the goal of physicists is to find one set of rules that covers all the forces. They've already merged electric and magnetic into one such, then later merged the weak force with that. I'm not sure if quark color force (and no I don't mean the big eared bartender) has been fully merged with electroweak or not. Gravity is still a (or the?) big standout, of course.

Henry