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Comments

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Laser Creates Quantum Whirlpool

students Re:I thought the distinction was arbitrary already (59 comments)

Sure; this article is about exciton polaritons though.

You seem to be implying phonons are not matter. I would not call that "clear" at all. Maybe you should elaborate? Especially with respect to optical phonons.

about a month ago
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Laser Creates Quantum Whirlpool

students Re:I thought the distinction was arbitrary already (59 comments)

Matter has mass. Light has no mass. That's a pretty significant distinction. A polariton's mass can change continuously as a function of energy from zero to about twice the electron mass.

The summary is a little odd. A hole is not a charged vacancy. A vacancy typically refers to a fixed (at low temperatures) location where an atom is missing in the lattice of a crystal. A hole is a mobile positive charge with mass similar to the electron mass.

(Recently finished my PhD studying polaritons and vacancies.)

about a month ago
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"Ambulance Drone" Prototype Unveiled In Holland

students Finally (82 comments)

A killer app for drones.

about 2 months ago
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Ask Slashdot: How To Pick Up Astronomy and Physics As an Adult?

students Job in astronomy IT? (234 comments)

Astronomers produce tons of data and need IT experts to manage their data centers, etc. You could try to get one of these jobs. Probably they do not pay great but you could make a real contribution to research using your existing expertise.

about 3 months ago
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Scientists Capture the Sound Made By a Single Atom

students phonon is a widely accepted term (100 comments)

When the summary puts the word in quotes it implies it is not the standard term for a quantum of sound, which it is.

Measurement of single phonons is actually well established. I have done it several times. The paper actually describes a piezoelectrically coupled superconducting qubit, which is pretty cool.

about 3 months ago
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XKCD Author's Unpublished Book Remains a Best-Seller For 5 Months

students amount of work (169 comments)

If you look at the bottom of the page, you will see that it says he did not do the programming. He only drew the comics.

about 4 months ago
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Ask Slashdot: Switching From SAS To Python Or R For Data Analysis and Modeling?

students Re:R... (143 comments)

R always gets the analysis job done for me, but when I recommend it I feel a need to include a warning that its data typing is strange.

For example, there are about five types which are like arrays, but which are only sometimes compatible with each other.

about 6 months ago
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Did the Ignition Key Just Die?

students Re:Easier or harder to steal a car? (865 comments)

I think many thieves will continue to use traditional car stealing techniques such as towing on smart cars. There is no need to hack a car's starter if you are just going to take the car apart to sell the pieces.

We should worry about is the security of self driving cars instead. Not because people will steal them, but because some script kiddie will tell all the cars to drive to the chop shop, causing a massive traffic jam.

about 8 months ago
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Minerva CEO Details His High-Tech Plan To Disrupt Universities

students Re:It is not the timelyness, it is the format. (106 comments)

If you have trouble paying attention to lectures and learning from it, have you considered that, perhaps, you shouldn't be in college to begin with?

This is a discriminatory attitude. Disadvantaged students (for example, those from poor families) are less able to cope with ineffective teaching. Based on controlled experiments, good teaching benefits all students, but it has a bigger benefits for those who used to be considered "not college material".

You addressed your comments to me personally. Notice my user ID number. It has been some years since I passed all my lecture classes.

about 8 months ago
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Minerva CEO Details His High-Tech Plan To Disrupt Universities

students Re:It is not the timelyness, it is the format. (106 comments)

Based on physiological evidence, normal attention span is only a few minutes. I am not aware of any studies of how attention span is changing, but I doubt it is changing much. Great teachers of the past were great compared to their peers, not compared to modern techniques. And many of them did not lecture.

about 8 months ago
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Minerva CEO Details His High-Tech Plan To Disrupt Universities

students Re:It is not the timelyness, it is the format. (106 comments)

On the whole I agree with you - learning is hard work and expensive for both teacher and student. I have several times heard your argument that good lectures are interactive. It is equivalent to saying good lectures include things which are not lecture.

about 8 months ago
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Minerva CEO Details His High-Tech Plan To Disrupt Universities

students Re:It is not the timelyness, it is the format. (106 comments)

Perhaps you enjoyed them, but it is highly unlikely you remember them. Physiological measures of attention, such as heart rate, show students do not pay as much attention to lectures past the first few minutes.

about 8 months ago
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Minerva CEO Details His High-Tech Plan To Disrupt Universities

students It is not the timelyness, it is the format. (106 comments)

Lecturing is an ineffective way to teach because most people cannot pay attention to and retain a traditional lecture. Someone who has been giving the same lecture for 20 years was teaching sub-optimally 20 years ago and has not improved. You are correct that they may not have gotten worse either.

about 8 months ago
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Minerva CEO Details His High-Tech Plan To Disrupt Universities

students Technology does not improve education (106 comments)

Using a wide variety of teaching techniques and evaluating their quality improves education. This is essentially what Minerva is proposing. The video conferencing is incidental.

about 8 months ago
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Used IT Equipment Can Be Worth a Fortune (Video)

students Also a big problem in science labs. (79 comments)

Suppose a university scientist wins a grant to buy a million dollar instrument. Thirty years later, the scientist dies. Nobody knows what the instrument is anymore, or what it is worth. University policy does not allow the sale of excess property. Nobody knows what restrictions were placed on the sale of the equipment in the grant award. Nobody wants to pay money to figure any of these things out. So, the equipment is either ignored or landfilled.

In my experience this happens often.

about 9 months ago
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Anti-Polygraph Instructor Who Was Targeted By Feds Goes Public

students Re:Total Obedience is Required ! (197 comments)

Both China and Russia hold elections. They pretend to a degree.

about a year ago
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Is a Postdoc Worth it?

students Re:Be a Gentleman Scientist (233 comments)

You will never be in a position to realize your dream of doing interesting research or becoming a professor.

Lots of people (myself included) did interesting research while still an undergraduate. In my experience, professors do not do research, they write grants and manage researchers.

1 year,26 days
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Ask Slashdot: Can You Trust Online Tax Software?

students Just use IRS.gov (237 comments)

figure out just how much they owe the country, without reading the tens of thousands of pages of IRS forms guidance.

I have never found it challenging to file my taxes using just the information from IRS.gov. IRS documents usually explain things very well.

about a year ago
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What Developers Can Learn From Healthcare.gov

students Amazon can't do it either. (267 comments)

The solution so far has been to put people into a queue, something that would get a site like Amazon laughed out of the marketplace. "I'm sorry, we're a little busy right now, try shopping later?!!"

This was a strange comparison. Amazon often loads very slow for me, and pages fail to load completely on a regular basis.

irs.gov used to be a good example of a fast site. It is not as fast as it used to be, but still about 3x faster than Amazon, probably due to a static design with few images.

about a year ago

Submissions

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Safecast Crowdsources Radiation Detection

students students writes  |  more than 3 years ago

students (763488) writes "Safecast is seeking donations and volunteer citizen scientists to link a network of home built open source and government radiation monitors to a Google map. They claim to meet "our collective need for trusted information." But unlike the National Weather Service or Tsunami Warning Centers, they do not provide any expert interpretation. Could radiation data misunderstood by the press or public cause an unnecessary panic? The public needs context, not raw data, censorship, or geiger counter bans."
Link to Original Source

Journals

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How do you reach Slashdot staff?

students students writes  |  more than 10 years ago Apparently, CowboyNeal no longer reads his email. I wanted to request a new slashbox... no answer. If you have a ligitimate request (even one of major financial/legal importance) there seems to be no way to reach slashdot staff to let them know about it. Maybe they should hire a few secritaries? If you know how to reach slashdot staff, let me know!

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Journals

students students writes  |  more than 10 years ago Interesting. No one else writes in their journal. I wish more people would look at mine and make comments, even though it is not very interesting. I'm going to programming camp in a few weeks! Wish me luck.

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I'm starting to understand...

students students writes  |  more than 10 years ago How some people get irritated with this place. There's too much random content. Of course, people's irritation just makes them more random. I give up... for a random period.

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New Account

students students writes  |  more than 10 years ago Hi. I just created this account. I used to be Nicklaszlo. I created this account because now the link my user name points to when I write a story will promote my web site, cesdep.org.

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