Reference Terms
from Wikipedia, the free encyclopedia
Vehicle propulsion
Propulsion is a means of creating force leading to movement.
A propulsion system has a source of mechanical power (some type of engine or motor, muscles), and some means of using this power to generate force, such as wheel and axles, propellers, a propulsive nozzle, wings, fins or legs.
Other components such as clutches, gearboxes and so forth may be needed to connect the power source to the force generating component.
The term propulsion is derived from two Latin words: pro meaning before or forwards and pellere meaning to drive.
Related Stories
1
2
Science & Society News
August 13, 2025
Aug. 13, 2025 — Advanced computer modeling suggests that by 2080, waves driven by sea level rise could flood Ahu Tongariki and up to 51 cultural treasures on Rapa Nui. The findings emphasize the urgent need for protective measures to preserve the island’s ...
Aug. 12, 2025 — THC levels in cannabis have soared in recent years, raising the risk of psychosis—especially in young, frequent users. Studies reveal a strong connection between cannabis-induced psychosis and schizophrenia, making early cessation and treatment ...
Aug. 12, 2025 — A study finds that people are more open to plant-based eggs when they’re part of familiar foods, like pancakes, rather than served plain. While taste and appearance still favor regular eggs, vegan eggs score higher on environmental and ethical ...
Aug. 12, 2025 — AI is now a routine part of workplace communication, with most professionals using tools like ChatGPT and Gemini. A study of over 1,000 professionals shows that while AI makes managers’ messages more polished, heavy reliance can damage trust. ...
Aug. 4, 2025 — New research led by Mass General Brigham reveals that people facing social challenges—like food insecurity, financial strain, and limited healthcare access—are two to three times more likely to develop long ...
Aug. 3, 2025 — Every time someone snaps a wildlife photo with iNaturalist, they might be fueling breakthrough science. From rediscovering lost species to helping conservation agencies track biodiversity and invasive threats, citizen observations have become vital ...
Aug. 1, 2025 — Women who drank heavily, even though they strongly wished to avoid pregnancy, were 50% more likely to become pregnant than those who drank little or not at all, according to new research. Surprisingly, cannabis use didn t show the same ...
July 27, 2025 — Between 2020 and 2024, COVID-19 vaccines saved 2.5 million lives globally, preventing one death for every 5,400 doses. A groundbreaking worldwide study led by researchers from Università Cattolica and Stanford University reveals that most lives ...
July 27, 2025 — Scientists at the University of Toronto have developed a new non-stick material that rivals the performance of traditional PFAS-based coatings while using only minimal amounts of these controversial ...
July 25, 2025 — AI-generated videos are becoming dangerously convincing and UC Riverside researchers have teamed up with Google to fight back. Their new system, UNITE, can detect deepfakes even when faces aren't ...
July 24, 2025 — Even people who never caught Covid-19 may have aged mentally faster during the pandemic, according to new brain scan research. This large UK study shows how the stress, isolation, and upheaval of lockdowns may have aged our brains, especially in ...
July 22, 2025 — A surprising discovery from Emory University shows that psilocin, the active metabolite of psychedelic mushrooms, can delay cellular aging and extend lifespan. Human cells lived over 50% longer, and mice treated with psilocybin not only lived 30% ...
Latest Headlines
updated 12:56 pm ET
Aug. 13, 2025 — A sweeping international study has revealed that when faced with complex decisions, people across cultures—from bustling megacities to remote Amazon communities—tend to rely on their own judgment ...
Aug. 2, 2025 — Long before evolution equipped them with the right teeth, early humans began eating tough grasses and starchy underground plants—foods rich in energy but hard to chew. A new study reveals that this ...
Aug. 1, 2025 — Scientists have discovered the oldest direct evidence of betel nut chewing in Southeast Asia by analyzing 4,000-year-old dental plaque from a burial in Thailand. This breakthrough method reveals ...
July 26, 2025 — What would happen if a nuclear war triggered a climate-altering catastrophe? Researchers have modeled how such a scenario could devastate global corn ...
July 24, 2025 — Italian students taking oral exams have a better shot at success if they’re scheduled around midday, according to new research. Analyzing over 100,000 assessments, scientists found a clear bell ...
July 23, 2025 — When imagining the future, optimists' brains tend to look remarkably alike, while pessimists show more varied neural activity. This neurological alignment could explain why optimists are often more ...
July 19, 2025 — Ancient Iranians hosted epic feasts with wild boars that had been hunted and transported from distant regions. These animals weren’t just ...
July 18, 2025 — Despite our strong belief in dogs' ability to sense good from bad in people, new research shows they may not actually judge human character, at least ...
July 18, 2025 — In a groundbreaking UK first, eight healthy babies have been born using an IVF technique that includes DNA from three people—two parents and a ...
July 18, 2025 — President Trump s diagnosis of Chronic Venous Insufficiency (CVI) has brought renewed attention to a frequently overlooked yet dangerous condition. CVI affects the ability of veins especially in the ...