andrewwhartion | 9 years ago | on: Why Finnish babies sleep in cardboard boxes (2013)
andrewwhartion's comments
andrewwhartion | 9 years ago | on: Deepstream.io – Open Realtime Server
andrewwhartion | 9 years ago | on: The Inner Game of Everything: 1974 Tennis Book Is Still a Sensation
andrewwhartion | 9 years ago | on: How three-day weekends can help save the world
https://workfamily.sas.upenn.edu/glossary/n/nineeighty-work-...
Google is your friend.
andrewwhartion | 9 years ago | on: The Zen of Passive Solar Heating Panel Design (2010)
Having rented for the past 6 years in 4 different houses, I've become convinced that this is one of the most significant factors for why so many house aren't enjoyable to live in.
Even if the overall design and layout of the house is good (I'm talking about the Christopher Alexander sense of good design), there are always small and not-so-small features that would never have been built that way had the person designing or building the house been intending to occupy it. Or had they moved in, said problems would be remedied in short order.
andrewwhartion | 9 years ago | on: A SpaceX Falcon 9 rocket has exploded at Cape Canaveral
andrewwhartion | 9 years ago | on: Everything I Am Afraid Might Happen If I Ask New Acquaintances to Get Coffee
andrewwhartion | 9 years ago | on: Everything I Am Afraid Might Happen If I Ask New Acquaintances to Get Coffee
andrewwhartion | 9 years ago | on: Flying Aquila: Early lessons from the first full-scale test flight
[edit] I suppose though they fly high enough to be out of range of most inexpensive weapons systems.
andrewwhartion | 9 years ago | on: U.S. Wins First Place at International Mathematics Competition in Hong Kong
[1] http://freakonomics.com/2014/02/11/predicting-the-winter-oly...
andrewwhartion | 9 years ago | on: Converting a Chest Freezer to a Fridge [pdf]
andrewwhartion | 9 years ago | on: Converting a Chest Freezer to a Fridge [pdf]
"This article describes a household refrigerator that requires about 0.1 kWh per day to operate. The refrigerator offers excellent food-preserving performance, because temperature fluctuations in its interior are naturally minimized during everyday use. This fridge is 10 to 20 times more energy efficient than typical household fridges on the market today. It seems that the biggest obstacles in increasing the energy efficiency and food- preserving performance of household refrigerators are strange human habits and lack of understanding of Nature, not technology or cost."
andrewwhartion | 9 years ago | on: Show HN: AutoMicroFarm Is Ready for Shipping
I'd love to hear how it's going after 12 months, because sand is certainly easier to work with than course gravel, which can be difficult to plant seedlings into, based on my own experience.
andrewwhartion | 9 years ago | on: Show HN: AutoMicroFarm Is Ready for Shipping
IBCs and blue plastic drums are generally the "go to' solution [2] as they're made from HDPE, although some are made from plastics that are not considered food safe as they use mould release agents during the manufacturing process which are toxic (no reference for this at the moment, sorry).
Just be aware that generally you need A LOT more grow bed area than you would think to be able to efficiently use the fish tank volume. You can pack a lot of happy fish into a given volume of water.
Also, the general consensus is to use course gravel (20mm) rather than sand, as sand can quickly become blocked with organic material.
[1] http://www.backyardaquaponics.com/forum/
[2] http://ibcofaquaponics.com/
[EDIT] Also, you'll want to keep the sunlight off the fish tank, because once the nitrogen level starts to rise [3], the algae will go nuts in there. I learned this the hard way.
[3] http://www.backyardaquaponics.com/information/the-nitrogen-c...
andrewwhartion | 9 years ago | on: Show HN: A secure, open source U2F token you can make with $4.5 worth of parts
andrewwhartion | 9 years ago | on: Why Online Voting Is a Danger to Democracy
andrewwhartion | 9 years ago | on: Samsung Acquires Joyent
andrewwhartion | 9 years ago | on: DeepArt.io introduces style transfer for videos
andrewwhartion | 9 years ago | on: Why Online Voting Is a Danger to Democracy
This is the system advocated by Bruce Schneier[1], I wish it would get more traction. If it's good enough for him, it's good enough for me...
[1] https://www.schneier.com/essays/archives/2004/07/voting_secu...
However, there's still plenty of companies there that want to guilt you into buying their stuff at a time when you're especially susceptible to it...