Bubble __

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Possible Answers: TEA.

Last seen on: LA Times Crossword 11 Jun 21, Friday

Random information on the term “Bubble __”:

A bubble is a globule of one substance in another, usually gas in a liquid. Due to the Marangoni effect, bubbles may remain intact when they reach the surface of the immersive substance.

Bubbles are seen in many places in everyday life, for example:

Bubbles form, and coalesce, into globular shapes, because those shapes are at a lower energy state. For the physics and chemistry behind it, see nucleation.

Bubbles are visible because they have a different refractive index (RI) than the surrounding substance. For example, the RI of air is approximately 1.0003 and the RI of water is approximately 1.333. Snell’s Law describes how electromagnetic waves change direction at the interface between two mediums with different RI; thus bubbles can be identified from the accompanying refraction and internal reflection even though both the immersed and immersing mediums are transparent.

The above explanation only holds for bubbles of one medium submerged in another medium (e.g. bubbles of gas in a soft drink); the volume of a membrane bubble (e.g. soap bubble) will not distort light very much, and one can only see a membrane bubble due to thin-film diffraction and reflection.

Bubble __ on Wikipedia

Random information on the term “TEA”:

Tea (in reference to food, rather than the drink) has long been used as an umbrella term for several different meals. Isabella Beeton, whose books on home economics were widely read in the 19th century, describes afternoon teas of various kinds, and provides menus for the “old-fashioned tea”, the “at-home tea”, the “family tea”, and the high tea. Teatime is the time at which the tea meal is usually eaten, which is late afternoon to early evening, being the equivalent of merienda. Tea as a meal is associated with the United Kingdom, and the Republic of Ireland, and some Commonwealth countries. Some people in Britain refer to their main evening meal as “tea” rather than dinner or supper. This article is instead concerned with the various types of secondary, lighter, meals called “tea”.

As a secondary meal, the timing of tea has moved over time in response to the moving later and later of the main dinner. Until the late 18th century dinner was eaten at what we now call “lunchtime”, or in the early afternoon; supper was a later and lighter meal. Gradually dinner began to migrate, amid much controversy, until by about 1900 it arrived at its present timing in the evening. The earliest “tea” meals were often in the early evening, some three or four hours after dinner, or even later, after a supper and before bed. The philosopher Thomas Carlyle and his wife invited guests for 7 pm to their teas in the 1850s, although afternoon tea before dinner was also becoming established by this time.

TEA on Wikipedia