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They light themselves from within by means of bioluminescence, the red flashes serving as a signal amongst themselves. Between their marginal lobes sit small sense bulbs, by which the helmet jelly can distinguish between light and dark; they have been observed to avoid light. Their nature of avoiding light has given them the title of being ...
Kenshō is not a single experience, but refers to a whole series of realizations from a beginner's shallow glimpse of the nature of mind, up to a vision of emptiness equivalent to the 'Path of Seeing' or to Buddhahood itself. In all of these, the same 'thing' is known, but in different degrees of clarity and profundity.
Drawing up a comprehensive list of words in English is important as a reference when learning a language as it will show the equivalent words you need to learn in the other language to achieve fluency.
The phrase seeing the elephant is an Americanism which refers to gaining experience of the world at a significant cost. It was a popular expression of the mid to late 19th century throughout the United States in the Mexican–American War, the Texan Santa Fe Expedition, the American Civil War, the 1849 Gold Rush, and the Westward Expansion Trails (Oregon Trail, California Trail, Mormon Trail).
An alternative definition is that the penumbra is the region where some or all of the light source is obscured (i.e., the umbra is a subset of the penumbra). For example, NASA 's Navigation and Ancillary Information Facility defines that a body in the umbra is also within the penumbra.
Optical phenomena are any observable events that result from the interaction of light and matter. All optical phenomena coincide with quantum phenomena. [1] Common optical phenomena are often due to the interaction of light from the Sun or Moon with the atmosphere, clouds, water, dust, and other particulates.
Sonoluminescence is the emission of light from imploding bubbles in a liquid when excited by sound. Sonoluminescence was first discovered in 1934 at the University of Cologne. It occurs when a sound wave of sufficient intensity induces a gaseous cavity within a liquid to collapse quickly, emitting a burst of light.
Quantum optics is the study of the nature and effects of light as quantized photons. The first indication that light might be quantized came from Max Planck in 1899 when he correctly modelled blackbody radiation by assuming that the exchange of energy between light and matter only occurred in discrete amounts he called quanta. It was unknown ...