Sentence examples for umbra from inspiring English sources
The word "shading" is correct and usable in written English
You can use it when referring to the use of light and dark hues to create an illusion of depth and volume in art, as well as when referring to a way of depicting light and shadow in artwork. For example: “The artist used subtle shading to create a vibrant landscape.”
Within the narrow area covered by the umbra, the eclipse is total.
The shadow from a point source of illumination is essentially all umbra, but that from a source of some size (as from the Sun) consists of a small umbra and a much larger partial shadow called the penumbra.
Thus, in an eclipse of the Sun, the regions within the umbra experience a total eclipse and those within the penumbra, partial eclipse.
Because of Earth's atmosphere, the edge of the umbra is rather diffuse, and the times of contact between the Moon and the umbra cannot be observed accurately.
Umbra participants moved toward a more-radical black separatist view of American politics and culture.
If the Moon's path leads through the centre of the umbra, the total eclipse can be expected to last about an hour and three-quarters.
To an observer within the umbra, the Sun's disk appears completely covered by the disk of the Moon; such an eclipse is called total (see the video).
Sometimes Earth intercepts the penumbra of the Moon but is missed by its umbra; only a partial eclipse of the Sun is then observed anywhere on Earth.
If the eclipse is a total one and circumstances are favourable, the Moon will pass through the umbra, the darkest part of the shadow, in about two hours.
If a solar eclipse occurs when the Moon is near perigee, observers along the path of the Moon's dark inner shadow (umbra) see a total eclipse.
The sky near the zenith becomes dark, but along the horizon Earth's atmosphere still appears bright because of the narrow extent of the umbra of the Moon's shadow on Earth.
