Related topics: plos one

Why do birds typically live longer than mammals?

Why do birds typically live longer than mammals? A new paper offers a hint, albeit not a conclusive answer. Assistant Professors of Biology Cynthia Downs and Ana Jimenez at Hamilton College and Colgate University respectively ...

Long-lived bats could hold secrets to mammal longevity

University of Maryland researchers analyzed an evolutionary tree reconstructed from the DNA of a majority of known bat species and found four bat lineages that exhibit extreme longevity. They also identified, for the first ...

Resting postures determined by animals' size

Cows always rest on their chests so that their digestion is not impaired. Rodents sometimes rest sitting down, while kangaroos sometimes lie on their backs. The larger the animal, the less often it lies down, and when it ...

In the Tree of Life, youth has its advantages

It's a question that has captivated naturalists for centuries: Why have some groups of organisms enjoyed incredibly diversity—like fish, birds, insects—while others have contained only a few species—like humans.

Identifying factors that influence mercury levels in tuna

Most consumers' exposure to toxic methylmercury occurs when they eat fish. But research just published in the ACS journal Environmental Science & Technology could help clarify why methylmercury concentrations in tuna vary ...

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X-height

In typography, the x-height or corpus size refers to the distance between the baseline and the mean line in a typeface. Typically, this is the height of the letter x in the font (which is where the terminology came from), as well as the u, v, w, and z. (Curved letters such as a, c, e, m, n, o, r and s tend to exceed the x-height slightly, due to overshoot.) However, in modern typography, the x-height is simply a design characteristic of the font, and while an x is usually exactly one x-height in height, in some more decorative or script designs, this may not always be the case.

Lowercase letters whose height is greater than the x-height either have descenders which extend below the baseline, such as y, g, q, and p, or have ascenders which extend above the x-height, such as l, k, b, and d. The ratio of the x-height to the body height is one of the major characteristics that defines the appearance of a font. The height of the capital letters is referred to as Cap height.

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