Diseases, Conditions, Syndromes

Norway tightens measures as COVID cases surge

Norway will tighten health measures to combat a surge in COVID-19 cases, including a limit on the number of people at parties, the government said on Tuesday.

Diseases, Conditions, Syndromes

France to shut nightclubs over COVID surge

Nightclubs in France will be ordered to close for four weeks from this weekend to counter a COVID surge that has put hospitals under severe strain, the prime minister said Monday.

Diseases, Conditions, Syndromes

Dutch ICU boss calls for tough lockdown to rein in virus

Social distancing became mandatory again across the Netherlands on Wednesday as coronavirus infections soared and the country's leading intensive care physician called for even tougher measures to rein in the pandemic.

Diseases, Conditions, Syndromes

South Korea sets pandemic high with 4,000 new virus cases

New coronavirus infections in South Korea exceeded 4,000 in a day for the first time since the start of the pandemic as a delta-driven spread continues to rattle the country after it eased social distancing in recent weeks ...

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Distance (or farness) is a numerical description of how far apart objects are. In physics or everyday discussion, distance may refer to a physical length, or an estimation based on other criteria (e.g. "two counties over"). In mathematics, a distance function or metric is a generalization of the concept of physical distance. A metric is a function that behaves according to a specific set of rules, and provides a concrete way of describing what it means for elements of some space to be "close to" or "far away from" each other.

In most cases, "distance from A to B" is interchangeable with "distance between B and A".

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