Beta

×

Welcome to the Slashdot Beta site -- learn more here. Use the link in the footer or click here to return to the Classic version of Slashdot.

Thank you!

Before you choose to head back to the Classic look of the site, we'd appreciate it if you share your thoughts on the Beta; your feedback is what drives our ongoing development.

Beta is different and we value you taking the time to try it out. Please take a look at the changes we've made in Beta and  learn more about it. Thanks for reading, and for making the site better!

Comments

top

Chemists Make Olympic Rings On a Molecular Scale

cyberfunk2 Sigh.. (89 comments)

Another example of overblown novelty... AFM is nothing new, and "olympicene" is also nothing new.. it's been made before... at least as early as 1965.. and possibly earlier still (haven't looked deeply in the scifinder databases).

Here's a literature citation (something the parent article sorely lacks) with proof. You know.. the stuff science is supposedly made of ?

http://pubs.rsc.org/en/Content/ArticleLanding/1965/JR/jr9650005920

more than 2 years ago
top

Verizon Adds $2 Charge For Paying Your Bill Online

cyberfunk2 Re:Ah, America! (562 comments)

There's two obvious reasons for this: Points on my credit card (i.e. free money/miles/ etc), and convienience. It allows me to watch only my credit card bill and pay it once. Also, there's a little bit of money to made on the float (not much these days w/ the low interest rates).

more than 2 years ago
top

Ask Slashdot: How to Exploit Post-Cataract Ultraviolet Vision?

cyberfunk2 Re:Dangerous (350 comments)

Subreality,

I'm curious, I'm a chemist and I use a UV lamp nearly every day to visualize TLC plates. The lamps, as I understand it emit from ~254-365 nm. The lamp is typically used against a black benchtop background to illuminate a white silica TLC plate, usually impregnated with a fluorescent dye to help visualization (the whole plate typically glows green under UV light, except where your compound is).

I always avoid looking directly at the lamp of course (but occasionally catch sight of it). However, I'm wondering, how dangerous this frequent exposure is. I'm often wearing my regular prescription glasses while doing this (which I believe block UV), but I know some people don't wear anything when looking at their TLCs. Furthermore, I always wear at least reasonably thick gloves when my hands are under the UV, but again, some people do not (this is direct exposure to the UV lamp source, which seems like a really bad idea...). Do you think the reflection is hazardous ? Given the frequency of use by the average bench chemist, it seems like this should be more of a concern than people typically talk about.

A typical lamp used for this purpose is shown here: http://www.uvp.com/compactlamps.html#thumb or here: http://orgchem.colorado.edu/hndbksupport/TLC/TLCprocedure.html#visualize

Also, some people sell enclosures to help visualization, but also to help block the UV light ... the annoyance with these of course is that they're typically quite clunky to use in comparison to the "flashlight" method people often use: http://uvp.com/cabinetsoverview.html.

more than 2 years ago
top

Creating a "Force Field" Invisible Touch Interface

cyberfunk2 Slashot .... (138 comments)

.. demolishing your self-worth and your senior research project in front of all of Nerddom.

more than 3 years ago
top

Creating a "Force Field" Invisible Touch Interface

cyberfunk2 Re:Not news (138 comments)

It's not that it's old... it's that its' NOT new in any tangible way... no new tech , no new application, no real invention here.. which makes it pretty "meh" in perspective.

That this stuff has been sold commercially for decades is pretty damning in terms of this being a "So what? " news item.

more than 3 years ago
top

Creating a "Force Field" Invisible Touch Interface

cyberfunk2 Re:I like to consider it a pretty flower. (138 comments)

Yea, I was imagining something like force-feedback via the beams.. now THAT would've been cool / slick.

more than 3 years ago
top

Creating a "Force Field" Invisible Touch Interface

cyberfunk2 Re:Not news (138 comments)

I'm not a huge fan of personal attacks, but you've got to admit, the guy's right.. this stuff is really very old stuff... it's not even marginally innovative.

more than 3 years ago
top

Creating a "Force Field" Invisible Touch Interface

cyberfunk2 Re:Really ? (138 comments)

Also, FYI.. these guys are re-inventing the wheel... so, sadly, it's not even new: http://www.irtouch.com/

more than 3 years ago
top

Creating a "Force Field" Invisible Touch Interface

cyberfunk2 Really ? (138 comments)

This is news ? I mean, it's a cute college project and all..... but it's sort of a joke compared to the cutting edge. And the cutting edge is what's NEWs.

    This is something i'd expect to see in make mag, or similar.

more than 3 years ago
top

Atomic Disguise Makes Helium Look Like Hydrogen

cyberfunk2 Born-Oppenheimer Approximation (127 comments)

By the way... I think the commentator in the attached perspective (http://www.sciencemag.org/content/331/6016/411.full) gets the born-oppenheimer approximation wrong... he states that :

"The BO approximation makes possible the practical application of quantum mechanics to all of molecular science. As the arrangement of the nuclei changes, the BO approximation postulates that the electrons will remain in a particular quantum state. "

When the BO approximation is the opposite : The atoms DONT move while the electrons DO (relatively speaking) because of their vast difference in mass. That is... the electrons are little bullets whizzing around at top speed, whereas the atoms are massive aircraft carriers in terms of mass (note: this is not meant to be even a remotely accurate analogy, but it's the general idea). You'd think that SCIENCE, of all journals, would get the Born-Oppenheimer approximation right !

Note: That in the second step of a typical quantum mech. calculation (e.g. a geometry optimization), you then use the average field generated in the first part to move the atoms (if they need to move in the particular calculation). Then you iterate to self-consistency.

more than 3 years ago
top

At Commonwealth Games, the World's Largest Aerostat

cyberfunk2 Helium cost (76 comments)

What with the rising cost of helium... what a terrible waste of a resource we're running out of ! It also must've cost a fortune.

more than 3 years ago
top

Nicholas Sze of Yahoo Finds Two-Quadrillionth Digit of Pi

cyberfunk2 Sigh... again ? (299 comments)

When will the mathematicians give up on Pi as some sort of grand benchmark.... couldn't they do better things to benchmark their systems... like running a folding@home client, or some such thing?

Honestly.. the first thing I thought when I saw this was... wow.. how.. uncreative...

How is this going to help them beat out Google and MS again ?

Not to bash on Yahoo.. they were once a great service/company... but they're quickly becoming a has-been. What they desperately need, and what everyone in this sector needs, is creativity. This sort of horn tooting doesn't really impress me, so much as it depresses me that people are benchmarking their systems on the same old problem again and again.

more than 3 years ago
top

New "Hairy" Material Is Almost Perfectly Hydrophobic

cyberfunk2 Re:Raw Data Video (133 comments)

Warning.. movies appear to be in crap-tastic Indeo 5 format

more than 4 years ago
top

Rockstar Employees Badly Overworked, Say Wives

cyberfunk2 Sounds like.. (633 comments)

That's funny.. working at R* sounds just like being a grad student.

more than 4 years ago
top

Organ Damage In Rats From Monsanto GMO Corn

cyberfunk2 Misleading title and summary ! (766 comments)

If you actually read the journal article, all you will find is a LOT of criticism of Monsanto's statistical methodology (which may be valid), but very little (if any) of any actual evidence of toxicity.

Basically , they claim (which may be correct): Monsanto didn't do their studies properly! They should've used more rats, for longer, and with more measured parameters !

And THEN they turn around and claim... even though the study is statistically unsound (according to their own argument), we're going to draw some conclusions that are weak to begin with, even within the weak frame of this supposedly faulty study !

It just doesn't make much sense.... from a professional scientists' standpoint (mine), this amounts to a lot of hemming and hawing about experimental methods, but absolutely nothing in the way of conclusions !

more than 4 years ago
top

Firefox 3 Beta 3 Officially Released

cyberfunk2 Re:Hints (337 comments)

On the Mac OS X version I dont actually see a home button in the Customize Toolbar dialog. Furthermore, switching small icons on/off appears to do nothing on OS X.

more than 6 years ago

Submissions

top

RIAA attacks Fair use

cyberfunk2 cyberfunk2 writes  |  more than 6 years ago

cyberfunk2 (656339) writes "It seems the RIAA has finally decided to drink their own koolaid. It seems the aforementioned entity is attacking the what most people believe to be holy ground in a case against Jeffrey Howell. The Washington Post reports In legal documents in its federal case against Jeffrey Howell, a Scottsdale, Ariz., man who kept a collection of about 2,000 music recordings on his personal computer, the industry maintains that it is illegal for someone who has legally purchased a CD to transfer that music into his computer. For his part, RIAA spokesman Jonathan Lamy said in a statement that the industry "will continue to bring lawsuits" against those who "ignore years of warnings,". "It's not our first choice, but it's a necessary part of the equation. There are consequences for breaking the law." Fair use anyone ?"
Link to Original Source

Journals

cyberfunk2 has no journal entries.

Slashdot Login

Need an Account?

Forgot your password?
or Connect with...

Don't worry, we never post anything without your permission.

Submission Text Formatting Tips

We support a small subset of HTML, namely these tags:

  • b
  • i
  • p
  • br
  • a
  • ol
  • ul
  • li
  • dl
  • dt
  • dd
  • em
  • strong
  • tt
  • blockquote
  • div
  • quote
  • ecode

"ecode" can be used for code snippets, for example:

<ecode>    while(1) { do_something(); } </ecode>