Business

E-scooters: The impact legalization would have in the UK

It is currently illegal to ride e-scooters in public spaces in the UK, but this has not stopped riders appearing on roads and pavements. An upcoming national consultation means it is a good time to consider the implications ...

Engineering

Anti-solar cells: A photovoltaic cell that works at night

What if solar cells worked at night? That's no joke, according to Jeremy Munday, professor in the Department of Electrical and Computer Engineering at UC Davis. In fact, a specially designed photovoltaic cell could generate ...

Security

UK police use of facial recognition tests public's tolerance

When British police used facial recognition cameras to monitor crowds arriving for a soccer match in Wales, some fans protested by covering their faces. In a sign of the technology's divisiveness, even the head of a neighboring ...

Energy & Green Tech

Government proposes release of Fukushima water to sea or air

Japan's economy and industry ministry proposed on Monday the gradual release or evaporation of massive amounts of treated but still radioactive water being stored at the tsunami-wrecked Fukushima nuclear plant.

Business

Testing tech ideas in public? San Francisco says get permit

Tired of San Francisco streets being used as a testing ground for the latest delivery technology and transportation apps, city leaders are now requiring businesses to get permits before trying out new high-tech ideas in public.

Engineering

A record-setting transistor

Many of the technologies we rely on, from smartphones to wearable devices and more, utilize fast wireless communications. What might we accomplish if those devices transmitted information even faster?

Security

Sharing accounts in the workplace is a mess

Last year, a team of CyLab researchers explored the account-sharing behaviors of romantic couples and found that some of their practices could compromise security. Building off that study, the team wanted to explore the ...

Energy & Green Tech

Novel solar cells arrive at International Space Station for testing

Five different types of solar cells fabricated by research teams at the Georgia Institute of Technology have arrived at the International Space Station (ISS) to be tested for their power conversion rate and ability to operate ...

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Space

Space is the boundless, three-dimensional extent in which objects and events occur and have relative position and direction. Physical space is often conceived in three linear dimensions, although modern physicists usually consider it, with time, to be part of the boundless four-dimensional continuum known as spacetime. In mathematics spaces with different numbers of dimensions and with different underlying structures can be examined. The concept of space is considered to be of fundamental importance to an understanding of the universe although disagreement continues between philosophers over whether it is itself an entity, a relationship between entities, or part of a conceptual framework.

Many of the philosophical questions arose in the 17th century, during the early development of classical mechanics. In Isaac Newton's view, space was absolute - in the sense that it existed permanently and independently of whether there were any matter in the space. Other natural philosophers, notably Gottfried Leibniz, thought instead that space was a collection of relations between objects, given by their distance and direction from one another. In the 18th century, Immanuel Kant described space and time as elements of a systematic framework which humans use to structure their experience.

In the 19th and 20th centuries mathematicians began to examine non-Euclidean geometries, in which space can be said to be curved, rather than flat. According to Albert Einstein's theory of general relativity, space around gravitational fields deviates from Euclidean space. Experimental tests of general relativity have confirmed that non-Euclidean space provides a better model for explaining the existing laws of mechanics and optics.

This text uses material from Wikipedia, licensed under CC BY-SA