YSK: self improvement app
I'm developing a self-improvement app that is focusing on getting rid of bad habits and setting up good ones. The main idea is to set up a good habit with 21 days long challenges. All of the challenges are focusing on self-improvement. Also there is a possibility to set up a competition by challenging your friends. I'm looking for beta-testers. If you are interested – leave a comment
TIL In 2008, Prince covered Radiohead’s “Creep” at Coachella. Someone uploaded a mobile video of it to Youtube. Prince quickly made Youtube remove it. After finding out about the blocking, Radiohead’s lead singer Thom Yorke said “Well, tell him to unblock it. It’s our song.”
| submitted by patpend
[link] [804 comments]
YSK The Reasons to Go Back to Incandescent Bulbs
This article was posted to my FB this morning:
I've built my career in the energy efficiency industry and have been exposed to both sides of the arguments, from slick sales teams to research scientists, and I've visited hundreds of regular people in their homes to talk about the new efficiency products that they've had installed. There are no free lunches: new solutions to old problems come with their own brand-new problems. The question is whether it's worth it. Here's my 2 cents on the above news article about CFL lighting:
MERCURY GAS – Yes, CFL bulbs contain mercury vapor. However, you will get more mercury exposure from eating a canned tuna sandwich than you would from intentionally inhaling the contents of a CFL bulb.
According to the research paper referred to in the above news article, "Scientists at the Fraunhofer Wilhelm Klauditz Institute found that they released around 7 micrograms per cubic metre of air. The official guideline limit is 0.35 micrograms per cubic metre.". A CFL contains around 4 milligrams of mercury, total.
Also, the bulb uses 80% less energy. In many areas that can mean 80% less coal needs to be burned in power plants. Do you know how much mercury is in coal? In 2005 power plants in the US emitted 53 tons of mercury, or 48080790000 milligrams. That's as if every man, woman, and child in the US smashed 37 CFL bulbs each, every year!! http://www.epa.gov/mats/powerplants.html
PSYCHOLOGICAL ISSUES – Due mostly to the flicker caused by 60Hz electricity, same as old fluorescent tube lights. Newer CFL bulbs have overcome this, at least to some degree, with built-in power conditioning electronics.
CANCER CHEMICALS – Not sure about how much are in CFL bulbs, but here's some perspective: http://grist.org/…/2011-05-30-dim-bulbs-umbra-on-the…/
Importantly, the study that the news story refers to tested LED bulbs, not CFLs. "Ogunseitan and a team of scientists from UCI and UC Davis crushed bulbs of different colors and intensity, simulating acid rain in landfill conditions to produce a "worst case scenario." Then they made precision measurements of toxic material in the resulting liquid."
UV RADIATION – Yes, they do emit UV, but unless you have a rare skin condition causing hypersensitivity (such as Lupus) then you'll be OK.. Here's spectrum analysis for a few different bulbs as well as human vision: http://provideyourown.com/…/health…/Spectrum_CFL_LED.jpg
BOTTOM LINE(s) – If you're worried about CFL bulbs, then perhaps buy LED instead; they are't really all that much more energy efficient, but they contain no mercury, they are far less delicate and breakable, they have no flicker issues, and they last ~25 years before burning out. However, LEDs do seem to emit even more UV radiation and I'm sure that they contain & emit some toxic chemicals with use, just like your running shoes and your bicycle!
Incandescent bulbs, including halogen, are inefficient; they convert most of the power into heat energy. However, if you are currently heating your home with other inefficient methods like baseboard electric heaters then it's just contributing to keeping your house warm.
Also, inefficient lighting still only contributes less to 5% of total household energy use. Forget the fancy light bulbs! Insulate your basement! Wrap your hot water tank! Weatherstrip the attic hatch!
Finally, here's the Canadian government coming clean about the risks posed by CFL bulbs: http://healthycanadians.gc.ca/…/home…/cfl-afc-eng.php
~~ Edits for formatting and math corrections
Nuclear Waste And Breeder Reactors
So I was dong research on a project and was confused about fast breeder reactors. According to many sites the plutonium could be cycled through again and again until is is burned up? How does this work and how is there not waste left over? Does it burn up or what? Thanks!!
Heres one site where is says theres no waste http://e360.yale.edu/feature/are_fast-breeder_reactors_a_nuclear_power_panacea/2557/
YSK: They can hear you talk in the drive-through at any fast food place as soon as you roll up.
Even though they didn't contact you yet or put you on hold they may still be listening to what you are saying.
What are these stands with glass on them?
I have seen them before on political events and I thought it's a bulletproof glass. It might sound stupid but I thought they were tactically positioned against tall buildings in case of snipers. LOL
Anyways, as you can see in the picture, that's an indoor stage and obviously I was wrong thinking that. Another thinking that I just had is that these random glass holding stands could be used for the strong lights but why have I seen them outdoor, too? Here is an example: http://i.imgur.com/0Zr9bd7.png
So, what are these for?
TIL: US District Judge William Alsup learnt Java in order to better judge the Oracle vs. Google case
| submitted by irfus
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