AC, A.C., A/C, or Ac often refers to:
- Air conditioning, often abbreviated as A/C
- Alternating current, a type of electrical current in which the current repeatedly changes direction
AC, A.C. or Ac may also refer to:
A car, or an automobile, is a motor vehicle with wheels. Most definitions of cars state that they run primarily on roads, seat one to eight people, have four wheels, and mainly transport people rather than cargo. There are around one billion cars in use worldwide.
The French inventor Nicolas-Joseph Cugnot built the first steam-powered road vehicle in 1769, while the Swiss inventor François Isaac de Rivaz designed and constructed the first internal combustion-powered automobile in 1808. The modern car—a practical, marketable automobile for everyday use—was invented in 1886, when the German inventor Carl Benz patented his Benz Patent-Motorwagen. Commercial cars became widely available during the 20th century. The 1901 Oldsmobile Curved Dash and the 1908 Ford Model T, both American cars, are widely considered the first mass-produced and mass-affordable cars, respectively. Cars were rapidly adopted in the US, where they replaced horse-drawn carriages. In Europe and other parts of the world, demand for automobiles did not increase until after World War II. In the 21st century, car usage is still increasing rapidly, especially in China, India, and other newly industrialised countries.
Cars have controls for driving, parking, passenger comfort, and a variety of lamps. Over the decades, additional features and controls have been added to vehicles, making them progressively more complex. These include rear-reversing cameras, air conditioning, navigation systems, and in-car entertainment. Most cars in use in the early 2020s are propelled by an internal combustion engine, fueled by the combustion of fossil fuels. Electric cars, which were invented early in the history of the car, became commercially available in the 2000s and are predicted to cost less to buy than petrol-driven cars before 2025. The transition from fossil fuel-powered cars to electric cars features prominently in most climate change mitigation scenarios, such as Project Drawdown's 100 actionable solutions for climate change.
There are costs and benefits to car use. The costs to the individual include acquiring the vehicle, interest payments (if the car is financed), repairs and maintenance, fuel, depreciation, driving time, parking fees, taxes, and insurance. The costs to society include maintaining roads, land-use, road congestion, air pollution, noise pollution, public health, and disposing of the vehicle at the end of its life. Traffic collisions are the largest cause of injury-related deaths worldwide. Personal benefits include on-demand transportation, mobility, independence, and convenience. Societal benefits include economic benefits, such as job and wealth creation from the automotive industry, transportation provision, societal well-being from leisure and travel opportunities. People's ability to move flexibly from place to place has far-reaching implications for the nature of societies.
A compressor is a mechanical device that increases the pressure of a gas by reducing its volume. An air compressor is a specific type of gas compressor.
Many compressors can be staged, that is, the gas is compressed several times in steps or stages, to increase discharge pressure. Often, the second stage is physically smaller than the primary stage, to accommodate the already compressed gas without reducing its pressure. Each stage further compresses the gas and increases its pressure and also temperature (if inter cooling between stages is not used).
Jump most commonly refers to jumping, a form of movement in which an organism propels itself into the air.
Jump or jumping may also refer to:
Outlet may refer to:
- Outlet, a river that runs out of a lake
- Electrical outlet
- Outlet store or outlet mall
- Pelvic outlet
- News outlet, news media
With or WITH may refer to:
- With, a preposition in English
- Carl Johannes With (1877–1923), Danish doctor and arachnologist
- With (character), a character in D. N. Angel
- With (novel), a novel by Donald Harrington
- With (album), a 2014 album by TVXQ
- With (EP), a 2021 EP by Nam Woo-hyun
by Ugly
The model we have has the ac plug on it no compressor. But we have several antique cars that sit slot Halo has never failed to start any of our cars, or our lawnmowers charges our phones wouldn’t hesitate in buying another if it was needed.
by Leon
This is a life saver no need to wait for a jump off or to put air in a tire.
by Spark
I already own three and have just ordered 9 for my close family relatives. It’s a great family gift and now I don’t have to shop for many individuals most of whom I never see. Merry Christmas 2021
by Dave
My wife bought this for me for my birthday last year and I have used this item many times. It is very good to jump start your car quickly especially if you are in a dark possibility dangerous area and with this you can do this without a stranger’s help. I especially recommend this to parents as a gift to their children who are new drivers or are going to college as I believe this item could save their lives! They can air up tires, jump start their car if they forget and leave a light on and let’s say their car breaks down and their phone is dead they can plug their phone into it for power so they can call for help! If you love your kids and care for their safety when you can’t be there please get this for them!