c.1400, "to bring forward in opposition," from Old French objecter and directly from Latin obiectus, past participle of obiectare "to cite as grounds for disapproval, set against, oppose," literally "to put or throw before or against," frequentative of obicere (see object (n.)). Cite This Source object in Technology Expand object-oriented In object-oriented programming, an instance of the data structure and behaviour defined by the object's class
In other words, climate change includes major changes in temperature, precipitation, or wind patterns, among other effects, that occur over several decades or longer. The planet's oceans and glaciers have also experienced some big changes - oceans are warming and becoming more acidic, ice caps are melting, and sea levels are rising
Solar Panels from Wholesale Solar
California Leads the Nation In 2006, California made a major long-term commitment to solar power by passing the California Solar Initiative, a ten-year incentive program with the goal of installing 3,000 megawatts of solar panels on the equivalent of one million rooftops. Vanguard I, the first solar-powered satellite celebrated its 53rd birthday this year, setting mileage records and holding the title of being the oldest artificial satellite still in orbit
How Electricity Works - HowStuffWorks
More than two and a half centuries have passed since Benjamin Franklin and others proved lightning was a form of electricity, but it's still hard not to flinch when a particularly violent flash lights up the horizon. Sure, you can flee from the world of crisscrossing power lines and live your life completely off the grid, but even at the loneliest corners of the world, electricity exists
How Light Works - HowStuffWorks
Does light travel as a wave, a ray or a stream of particles? Is it a single color or many colors mixed together? Does it have a frequency like sound? And what are some of the common properties of light, such as absorption, reflection, refraction and diffraction?You might think scientists know all the answers, but light continues to surprise them. That's almost 18 million times slower than normal! No one would have thought such a feat possible just a few years ago, yet this is the capricious way of light
Electricity -- the flow of electrical power -- is a secondary energy source, generated by the conversion of primary sources of energy, like fossil, nuclear, wind or solar. Subtopics Smart Grid Storage How Much Do You Use? Compare your energy usage at home, at work and on the road to others in this state-by-state map of energy consumption, based on 2009 data
Waste from Homes and Businesses Because CH4 emissions from landfill gas are a major source of CH4 emissions in the United States, emission controls that capture landfill CH4 are an effective reduction strategy. To find out more about the role of CH4 in warming the atmosphere, and its sources, visit the Causes of Climate Change page and the Greenhouse Gas Indicators page in the Science section
Find out how a small wind system works and if it's right for your home! Read more Make Your Next Road Trip Fuel Efficient Enjoy the open road this summer and keep your fuel costs low with these driving tips. Read more A Home Cooling Strategy for Lower Energy Bills Keep your family and your wallet happy this summer by properly maintaining your air conditioner and planning an energy efficient home cooling strategy
The highly rarefied region above the chromosphere, called the corona, extends millions of kilometers into space but is visible only during a total solar eclipse (left). (Exactly which bodies should be classified as planets and which as "smaller objects" has been the source of some controversy, but in the end it is really only a matter of definition
The Energy Story - Introduction
The forms of energy we will look at include: Electricity Biomass Energy - energy from plants Geothermal Energy Fossil Fuels - Coal, Oil and Natural Gas Hydro Power and Ocean Energy Nuclear Energy Solar Energy Wind Energy Transportation Energy We will also look at turbines and generators, at what electricity is, how energy is sent to users, and how we can decrease or conserve the energy we use
Home : ENERGY STAR
Start Saving Now Take the Pledge Home Assessment Tools Seal and Insulate Your Home Learn about ENERGY STAR Products Learn about Home Performance with ENERGY STAR Ways to Save Home Assessment Tools Heat and Cool Efficiently Tax Credits How can we help you? I want help with improving my home's comfort and efficiency How can I heat and cool my home efficiently? How can I stop drafts? I'd like to know about power management for my computer. Find ENERGY STAR Products Energy Savings at Home Take the Pledge Learn about Climate Change Ways to Save Tax Credits Ask an Expert Heat and Cool Efficiently How can we help you? How can I make my home entertainment center more energy efficient? What should I know about LED lights? I'd like to know about power management
Learn More Partner of the Year - Sustained Excellence PSEG Long Island received ENERGY STAR recognition for its continued leadership in advancing the market for ENERGY STAR products and practices. Learn More Partner of the Year - Sustained Excellence Raytheon Company received ENERGY STAR recognition for expanded collaboration of the energy program across the company and for adding focus on customer and supplier engagement
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