Yesterday a neighbour gave me a bag of home-grown onions and garlic that were surplus to his requirements. Gratefully received. When I put them in a bowl their dried tendrils draped over the edge in a wonderfully informal fashion. The overhead light created some distinctively graphic shadows not only on the onions in the bowl but also on my kitchen work surface.
[uhm -br uh ]
noun plural um·bras, um·brae
1. shade; shadow. A region of complete shadow resulting from total obstruction of light.
2. the invariable or characteristic accompaniment or companion of a person or thing.
3. a phantom or shadowy apparition, as of someone or something not physically present; ghost; spectral image.
In Astronomy. see the Wiki link here for an illustration of the 3 distinct parts of a shadow:
a. the complete or perfect shadow of an opaque body, as a planet, where the direct light from the source of illumination is completely cut off.
b. the dark central portion of a sunspot.
2. Penumbra – a shadowy, indefinite, or marginal area. (from the Latin paene “almost”, “nearly” and umbra “shadow”).
3. Antumbra – is the region from which the occluding body appears entirely contained within the disc of the light source. (from the Latin ante, “before”).
Anyone for French Onion Soup?