Public domain image resources Public domain image resources is a copy of the master Wikipedia page at Meta, which lists a number of sources of public domain images on the Web. Public Domain images should be marked with the Public Domain Mark 1.0. Public Domain Mark enables works that are no longer restricted by copyright to be marked as such in a standard and simple way, making them easily discoverable and available to others. The Public Domain Mark is recommended for works that are free of known copyright around the world. These will typically be very old works.[1] For a creator to release his/her works into the public domain legally they must use the creative commons CC0 license which gives creators a way to waive all their copyright and related rights in their works to the fullest extent allowed by law.[2] The presence of a resource on this list does not guarantee that all or any of the images in it are in the public domain.
Passive Solar Home Design Passive solar design takes advantage of a building’s site, climate, and materials to minimize energy use. A well-designed passive solar home first reduces heating and cooling loads through energy-efficiency strategies and then meets those reduced loads in whole or part with solar energy. Because of the small heating loads of modern homes it is very important to avoid oversizing south-facing glass and ensure that south-facing glass is properly shaded to prevent overheating and increased cooling loads in the spring and fall. Energy Efficiency First Department of Justice April 17th, 2014 April 16th, 2014 March 14th, 2014 March 11th, 2014 Monday, April 21, 2014
Fusion reactor achieves tenfold increase in plasma confinement time The promise of fusion is immense. Its fuel is hydrogen plasma, made from the most abundant atom in the Universe, and the major byproduct is helium, an inert gas. In this era with the threat of climate change, clean alternative sources of energy are more necessary than ever. However, even after decades of research and enormous investments of money, scientists haven't succeeded in producing a working nuclear fusion plant. Nevertheless, many feel the potential payoff is worth continued investment. Earth from Space The NASA Earth Observations Photography database of images is a national treasure. We are publishing these selected photos and related captions on the Internet to provide a glimpse of this national treasure to the public. This database was compiled by our staff to illustrate some very interesting Earth features and processes, including cities as seen by our Astronauts from space. Earth from Space provides several ways to search the selected images. Each image is available in three resolutions and includes cataloging data and a caption. However, this site contains only a small selection of the best of our Earth photography.
Toolbox: Passive Makes Perfect Zehnder ComfoAir 550 HRV Don’t be fooled by its compact size; the ComfoAir 550 is Passive House certified and rated at 84 percent efficiency. It handles up to 324 cubic feet of air per minute and comes equipped with extras like automatic frost protection and a wireless remote control. Find it in Fabrica718’s retrofitted Tighthouse, and its ERV cousin in the Empowerhouse. Phase Change BioPCmat Tuck this stuff into insulated roofs, ceilings, and walls, then sit back and watch your energy costs drop.
Data.gov Data.gov is the federal government’s open data site, and aims to make government more open and accountable. Opening government data increases citizen participation in government, creates opportunities for economic development, and informs decision making in both the private and public sectors. Data.gov implements the Executive Order on making government data open and machine readable as well as the federal Open Data Policy. Open Source Data.gov was built with open source software, CKAN, and WordPress.
RE<C - A Google.org Project to Develop Electricity from Renewable Energy Sources Our approach to RE<C Through RE<C, we made several investments in companies working on potentially breakthrough technologies. For instance, we invested in companies like Brightsource Energy and eSolar to help expand their work on concentrating solar power technology, and in Potter Drilling to advance its innovative geothermal drilling technology. Exciting MIT droplet discovery could turbocharge power plants, airships and more Top engineers at MIT say they have come across a handy effect which could seriously boost the efficiency of a critical piece of kit used in many important technologies. The piece of kit in question is the humble water condenser, which has been in use for hundreds of years: James Watt introduced it to the earliest steam engines, turning them from inefficient curiosities to the motors which powered the Industrial Revolution. Today, condensers are critical to the functioning of most powerplants - and if they can be made better, they could greatly strengthen the case for the reintroduction of airships. In essence, a condenser works by exposing steam to a cold surface. This causes the steam to turn into water, which flows down the cold surface and drips off into a collecting sump. In a powerplant, the condenser is attached to the exhaust end of the turbines which drive the generators.