The moon dog, moondog, or mock moon (scientific name paraselene, meaning “beside the moon”) is a comparatively rare circular point on a lunar halo caused, in cirrus or cirrhostratus clouds, by refraction of lunar luminous ice by the moonlight of hexagonal ice crystals. As part of the 22° halo, moon dogs appear, approximately 10 Moon beyond the Moon diameters. It is… Read more →
Spinal Masculine Atrophy (SMA) most often affects children and makes the use of their muscles difficult. If your child has SMA, the brain and spinal cord break up nerve cells. The brain stops transmitting signals that regulate the movement of muscles. The muscles of your child become tightened and sluggish, and children may have difficulty regulating your head‘s movement, sitting, and… Read more →
Indigo is a deep and rich color close to the color wheel blue (a primary color in the RGB color space), as well as to some variants of ultramarine, based on the ancient dye of the same name. The word Indigo comes from the Latin for “Indian”, as the dye was originally imported to Europe from India. The primary use… Read more →
Nobody knows why music influences our emotions so profoundly. But we have a few interesting hints thanks to some recent studies. Why are we enjoying music? This one works on several levels, like most good questions. At certain stages, but not all of us have answers. We like music because it’s nice for us. Why do we feel confident about… Read more →
Glass etching, or “French embossing,” is a popular technique developed during the mid-1800s that is still widely used in both residential and commercial spaces today. Glass etching comprises the techniques of creating art on the surface of glass by applying acidic, caustic, or abrasive substances. Traditionally this is done after the glass is blown or cast, although mold-etching has replaced… Read more →
Remembrance Day was first observed in 1919 throughout the British Commonwealth. It was originally called “Armistice Day” to commemorate armistice agreement that ended the First World War on Monday, November 11, 1918, at 11 a.m.—on the eleventh hour of the eleventh day of the eleventh month. From 1921 to 1930, Armistice Day was held on the Monday of the week… Read more →
Bright, colored areas of light beside the Sun are known as sun dogs (sometimes written as one word: sundogs). They’re often approximately 22 degrees to the left or the right (or both!) and about the same distance above the Horizon as the Sun. They’re also often seen as part of a ring or Halo around the Sun. Sun dogs form when there are hexagonal ice… Read more →
A Strobe is a light or lamp that flashes regularly and can make moving objects look like they’re not moving or like they’re moving very slowly. If the object you’re looking at using a Strobe is moving at the same frequency as the Strobe is flashing, the object appears completely motionless. The Stroboscopic Effect is a visual phenomenon caused by aliasing that occurs when continuous motion is represented… Read more →
A carbon footprint is defined as: The total amount of greenhouse gases produced to, directly and indirectly, support human activities, usually expressed in equivalent tons of carbon dioxide (CO2). Typically, a carbon footprint is calculated by estimating not just the CO2 emissions that the activity in question causes, but also any emissions of other greenhouse gases (such as methane and nitrous oxide)… Read more →
Ripening is a process in fruits that causes them to become more palatable. In general, the fruit becomes sweeter, less green (typically “redder”), and softer as it ripens. Ripening agents accelerate ripening. An important ripening agent is an ethylene, a gaseous hormone produced by many plants. Many synthetic analogues of ethylene are available They allow many fruits to be picked prior to full ripening, which… Read more →
