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The age-old question actually has an answer it s both! Tomatoes are fruits that are considered vegetables by nutritionists. Botanically, a fruit is a ripened flower ovary and contains seeds. Tomatoes, plums, zucchinis, and melons are all edible fruits, but things like maple “helicopters” and floating dandelion puffs are fruits too. For some reason, people got hung up on tomatoes, but the “fruit or vegetable” question could also work for any vegetable with seeds.
Now, nutritionally, the term “fruit” is used to describe sweet and fleshy botanical fruits, and “vegetable” is used to indicate a wide variety of plant parts that are not so high in fructose. In many cultures, vegetables tend to be served as part of the main dish or side, whereas sweet fruits are typically snacks or desserts. Thus, roots, tubers, stems, flower buds, leaves, and certain botanical fruits, including green beans, pumpkins, and of course tomatoes, are all considered veget
SA | Definition, History, & Facts
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20 Under 40: Young Shapers of the Future (Science and Technology)
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In most processes the starting material is a fine plastic or metal powder. Typically, the powder is stored in cartridges or beds from which it is dispensed in small amounts and spread by a roller or blade in an extremely thin layer (commonly only the thickness of the powder grains, which can be as small as 20 micrometres, or 0.0008 inch) over the bed where the part is being built up. In MIT’s 3DP process this layer is passed over by a device similar to the head of an ink-jet printer. An array of nozzles sprays a binding agent in a pattern determined by the computer program, then a fresh layer of powder is spread over the entire build-up area, and the process is repeated. At each repetition the build-up bed is lowered by precisely the thickness of the new layer of powder. When the process is complete, the built-up part, embedded in unconsolidated powder, is pulled out, cleaned, and sometimes put through some post-processing finishing steps.