Archive for August, 2019

August 12, 2019

Fearsome Critters

Jackalope

In early lumberjack folklore, fearsome critters are fantastical beasts that were said to inhabit the frontier wilderness of North America, such as  the jackalope, a rabbit with the antlers of an antelope. Fearsome critters were an integral part of oral tradition in North America lumber camps during the turn of the 20th century, principally as a means to pass time (such as in tall tales) or as a jest for hazing newcomers.

In a typical fearsome critter gag, a person would casually remark about a strange noise or sight they encountered in the wild; subsequently, another accomplice would join in. Meanwhile, an eavesdropper would begin to investigate.

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August 8, 2019

Autorhythmicity

automaticity

Autorhythmicity [aw-toh-rith-miss-uh-tee], or automaticity, refers to the heart’s ability to spontaneously generate an electric charge without outside help. Cardiac electrical activity originates in the sinoatrial node (SAN) and is propagated via the ‘His-Purkinje’ network, the fastest conduction pathway within the heart. This pathway is known as the electrical conduction system of the heart.

The electrical signal travels from the SAN, which stimulates the atria to contract, to the atrioventricular node (AVN), which slows down conduction of the action potential from the atria to the ventricles. This delay allows the ventricles to fully fill with blood before contraction. The signal then passes down through a bundle of fibers called the ‘bundle of His,’ located between the ventricles, and then to the ‘purkinje’ fibers at the bottom (apex) of the heart, causing ventricular contraction.

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August 2, 2019

Diamond and Silk

Dummycrats

Lynnette Hardaway and Rochelle Richardson, popularly known as Diamond and Silk, are American live-stream video bloggers, social media personalities, political activists and Fox Nation hosts.

They are known for their commentary in support of United States President Donald Trump. Since 2018, Diamond and Silk have traveled the country on their Chit Chat Tour. Hardaway is notably more talkative, while Richardson often just expresses agreement.

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August 1, 2019

Dog Days

Canis Major

The dog days or dog days of summer are the hot, sultry days of summer. They were historically the period following the heliacal rising of the star system Sirius, which Greek and Roman astrology connected with heat, drought, sudden thunderstorms, lethargy, fever, mad dogs, and bad luck. They are now taken to be the hottest, most uncomfortable part of summer in the Northern Hemisphere.

In addition to following Orion into the night sky, the Dog Star Sirius can be easily located in the heavens by following the line created by the prominent asterism (a popularly-known group of stars) Orion’s Belt.

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