Notes concerning “Energy”
Air conditioning
2007 to 2009 (22 minutes)
The economics of solar energy
2007 to 2009 (27 minutes)
Predictions for future technological development (2008)
2008-04-19 (11 minutes)
Pensamientos acerca de diseñar un calefón solar
2012-10-15 (2 minutes)
Más pensamientos acerca de diseñar un calefón solar
2012-10-15 (5 minutes)
Passively safe solar hot water
2012-10-15 (updated 2012-10-16) (6 minutes)
Notes and calculations on building luxury underground arcologies for whoever wants them
2013-04-17 (updated 2013-05-17) (67 minutes)
Illuminating yourself with 10 kilolux of LEDs to combat seasonal affective disorder
2013-05-17 (5 minutes)
The future of the human energy market (2014)
2014-04-24 (19 minutes)
Fukushima leak
2014-04-24 (6 minutes)
Keyboard-powered computers
2014-10-25 (updated 2018-10-28) (27 minutes)
A hand-powered computer?
2015-09-03 (updated 2017-07-19) (11 minutes)
Jellybean ICs 2016
2016-07-14 (updated 2019-05-05) (17 minutes)
How would you maximize the energy density of a capacitor?
2016-07-27 (6 minutes)
Solar dehumidifier
2016-08-11 (5 minutes)
Pulley generator
2016-09-05 (2 minutes)
Spring energy density
2016-09-05 (updated 2019-04-20) (5 minutes)
The internet is probably not going to collapse for economic reasons
2016-09-06 (10 minutes)
Low-power microcontrollers for a low-power computer
2016-09-06 (updated 2018-10-28) (18 minutes)
Lithium fission energy
2016-09-06 (updated 2019-05-24) (6 minutes)
Soldering with a compound parabolic concentrator or even just an imaging lens
2016-09-07 (2 minutes)
Mic energy harvesting
2016-09-07 (updated 2016-09-08) (5 minutes)
Solar-powered portable computers
2016-09-17 (updated 2018-10-28) (15 minutes)
License-free femtowatt UHF radio transceiver ICs under a μJ per bit
2016-09-19 (4 minutes)
Recuperator heat storage
2016-11-01 (updated 2019-02-25) (3 minutes)
A design sketch of an air conditioner powered by solar thermal power
2016-12-22 (updated 2017-01-04) (29 minutes)
Self replication changes
2017-01-16 (5 minutes)
Reflections on rebraiing calculators with this RPN calculator code I just wrote
2017-04-11 (4 minutes)
Illumination cost
2017-05-31 (3 minutes)
A quintuple-acting vacuum cascade to recycle heat for more efficient distillation and desalination
2017-06-21 (3 minutes)
Japan can achieve energy autarky via solar energy, but not much before 2027
2017-07-12 (4 minutes)
Zombie contingency plan
2017-07-19 (9 minutes)
Exploration of using RF current sources instead of ELF voltage sources for mains power
2018-04-30 (updated 2018-07-05) (29 minutes)
Turning off the power supply for every sample to reduce noise
2018-06-18 (2 minutes)
Lithium battery welder
2018-06-21 (updated 2019-01-22) (2 minutes)
Notes on the STM32 microcontroller family
2018-06-30 (updated 2018-10-28) (42 minutes)
Text editor design for e-ink displays
2018-10-28 (23 minutes)
Three phase oscillating belt
2018-10-28 (4 minutes)
Cheap textures
2018-10-28 (updated 2019-05-05) (6 minutes)
Atmospheric pressure harvesting phoenix egg
2018-11-23 (14 minutes)
Household thermal stores
2018-12-02 (27 minutes)
Balcony battery
2019-02-11 (updated 2019-02-24) (6 minutes)
Groping toward a high-efficiency speaker driver
2019-04-02 (15 minutes)