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 ...

Robotics

Assembler robots make large structures from little pieces

Today's commercial aircraft are typically manufactured in sections, often in different locations—wings at one factory, fuselage sections at another, tail components somewhere else—and then flown to a central plant in ...

Robotics

Control of snake-like robots for high mobility and dexterity

Snake-like articulated mobile robots can enter narrow spaces and climb obstacles using their long and thin bodies, and are effective for inspection of narrow spaces and search-and-rescue operation on disaster sites. However, ...

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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