bertm

On a similar note, you could feed the warms iron particles for a few days and maybe use magnetometer mapping.

This misses the NVIDIA Jetson/Orin/Thor line of GPU-enabled edge computers which are more comparable with Raspberry Pis. The Jetson Orin Nano Super is $250. Another feature which we find useful is the native NVMe drive support. For the price, this blows RPis out of the water for imaging applications.

https://www.nvidia.com/en-us/autonomous-machines/embedded-sy...

A friend and I found a contractor to give us a couple of these lights in the Phoenix area. We traced the LEDs back to a Seoul Semiconductor Phosphor on-chip design. We still have a suspicion that LM80 testing didn’t catch this and it was due to a thermal cycling failure. https://m.youtube.com/watch?v=4Mll-YDDAF4

I had that same thought. I travel a bunch for work and would love to be able to wire up a RPi/Arduino remotely to a sensor or other device and run a test or two.

Deep dive into why streetlights across the US are failing.

Dr. Levenspiel came up in another thread about elephant curves. He tried for many years to get this article published on the aerodynamics of dinosaurs and how this might reflect on atmospheric pressure at the time. There is a long list included of rejections from various scientific publications in the 90s. Seemed fitting for Hacker News.

I have to plug Dr Octave Levenspiel. Levenspiel was a professor emeritus when I did my undergrad. He did much of the work on industrial fluidized beds among other things. The elephant curve discussions were a criticism of the complex multi-parameter fitting for heterogenous catalysis of the time. https://levenspiel.com/elephants/

He tried for a while to get an aerodynamics paper published on the flight of dinosaurs. http://levenspiel.com/wp-content/uploads/2016/02/DinosaurW.p...

This intellectual curiosity reminded me a bit of Feynman and his plate spinning.

I used this all the time. Sad to see it go.

Found the complaint in PACER if anyone is interested in reading.

https://www.scribd.com/document/420311557/Complaint-19-06570

I worked for a long time as a chemical engineer making cadmium containing quantum dots. We had many discussions inside the company about complying with the EPA's TSCA regulations. https://www.epa.gov/laws-regulations/summary-toxic-substance...

The reason why these regulations exist was because toys and consumer goods would be imported with red paint that contained cadmium.

Usually the importer is responsible for complying or at least reporting to the EPA under TSCA.

Great analysis. I wonder how a semi-log graph would look.

"A study published in 2007 from the US National Cancer Institute, for instance, found that men that took multivitamins were twice as likely to die from prostate cancer compared to those who didn’t. And in 2011, a similar study on 35,533 healthy men found that vitamin E and selenium supplementation increased prostate cancer by 17%."

They do cite quite a few articles that show negative effects of specific vitamins.

Could be neat if they become the defacto way to launch and sell opensource hardware. I'd be interested to see if that pencils out as a viable/scalable business.

Great contrast to the OP. They sound like a highly competent team, making a better "coffee".

LoRa is a really cool technology. We are incorporating it into our networking stack/ hardware module. From field testing, we've seen about 4-6 miles line of sight, and about a mile through an urban environment (parking garage, apartment building, etc). Plus the bare radio chips are less than $10 bucks.

Try out Low Power Labs Monteino with the HopeRF, RFM95 LoRa module. The radio library is lacking but you can get up and running quickly. https://lowpowerlab.com

If you want something a little more enterprisy and turn-key, try the new guys (I work for them). The Patch module has both a BLE and LoRa radio. https://www.filament.com

Another article on the same topic: http://www.computerworld.com/article/2969396/internet-of-thi...

"Filament looks really interesting. It would be possible to dismiss this fledgling business as a hodgepodge of buzzwords, but the credibility of its investor pool, the novel approach it seems to be taking to the problem, and the very real opportunity that exists for IoT networks all combine to make this an interesting play."

edit: a better written version: http://www.coindesk.com/filament-nets-5-million-for-blockcha...

"To build its technology, Filament is using a series of protocols that include the blockchain transaction database behind Bitcoin; BitTorrent, the popular peer-to-peer file sharing software; Jose, a contract management protocol that is also used in the OAuth authentication service that lets people use their Facebook ID to log in and manage permissions to other sites around the web; TMesh, a long-range mesh networking technology and Telehash for private messaging."

Full report: http://www.mckinsey.com/~/media/McKinsey/dotcom/Insights/Bus...

It looks like the powder is made by a physical process. Just as water absorbs into a towel. Ethanol apparently absorbs into dextrin powder and stays as a dry solid.

From the patent:

EXAMPLE II A 150 g. amount of the bulked 5 DE. MOR-REX dextrin of Example I was blended with 250 g. of 90% by weight water) ethanol in a Hobart mixer at speed No. 2 with a wire whisk for 2 minutes. A dry-tothe-touch free flowing powder was obtained that contained 56.2% ethanol and 8.3% moisture. The bulked ethanol containing flowable powder was packaged in air-tight foil envelopes and after 6 months storage had retained its flowability characteristics and its original alcohol content.

EXAMPLE III A teaspoonful (3 g.) of the product of Example II, when added to 10 ml. of water produced a clear, sparkling low-viscosity alcoholic solution with a nonsweet strong alcohol taste.

I noticed that Eastern Nevada has one of the highest mobility rates according to this study. This surprises me. That side of the state is one of the least populated areas and the most desolate. I wonder if there is a statistical bias at work here.

It happened in the 70s to Daniel Ellsberg, the Pentagon Paper's leaker.

"Judge Byrne dismissed all charges against Ellsberg."

"He and Russo faced charges under the Espionage Act of 1917 and other charges including theft and conspiracy, carrying a total maximum sentence of 115 years."

-http://en.wikipedia.org/wiki/Daniel_Ellsberg

There is not a video included in the article, but one can be found here: http://vimeo.com/51320244

Great! Thanks. It looks like his name may in fact be Daniel Katz. Is that the same guy?

Looking back at the Petagon Papers I found this quote:

"[t]he security of the Nation is not at the ramparts alone. Security also lies in the value of our free institutions. A cantankerous press, an obstinate press, an ubiquitous press must be suffered by those in authority in order to preserve the even greater values of freedom of expression and the right of the people to know." - Judge Judge Murray Gurfein declining to issue such an injunction against the publishing of the Pentagon Papers.

I don't understand how employees can get screwed with ISOs from a tax liability stand point. ISOs are not taxable until a capital gain is realized i.e. exercise and sale. Are you referring to non-qualified stock options?

I often wonder about these types of theories. They are often hard to prove or disprove. It is fun to try and come up with a theory that is equally as plausible given the information provided.

To your theory on art, could art be defined as anything which a group of people would define as art? Or potentially anything valued by a group seemly without functional value? It seems to be a balance between simplicity and informational content.

Patrick, have you tried a large thematic change to the BBC site in the past? It is pretty neat to see the changes for optimization to the site over the years. Still, I can't help but think the "loud" colors lead to less optimal performance. Disclaimer --> Not a mom or teacher.

It seems difficult to analyze the degree of ambition in any given startup from PR. Although ambition makes for a good story, it doesn't necessarily sell product/get users. So it seems, early stage startups focus on simple messages which the audience will understand. Look at the evolution of PR coming from Air BnB over time.

A good analogy for this is flipping a coin. What is the proportion of total heads to total tails if a population of people each flip a coin until they get a heads. The answer is fairly trivial, as each coin flip is independent. Given a fair coin, you would expect the answer to be near 1. You could always calculate the variance given the population size using the binomial distribution.

A more fruitful question might be: what is the average family size in a country with these birthing habits?