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A counterbore in a metal plate. In machining, a counterbore (symbol: ⌴) is a cylindrical flat-bottomed hole that enlarges another coaxial hole, or the tool used to create that feature. A counterbore hole is typically used when a fastener, such as a socket head cap screw or fillister head screw, is required to sit flush with or below the level ...
History of timekeeping devices. A marine sandglass. It is related to the hourglass, nowadays often used symbolically to represent the concept of time. The history of timekeeping devices dates back to when ancient civilizations first observed astronomical bodies as they moved across the sky. Devices and methods for keeping time have gradually ...
An illustration of the route of ASMR's tingling sensation [1] An autonomous sensory meridian response (ASMR) [2] [3] [4] is a tingling sensation that usually begins on the scalp and moves down the back of the neck and upper spine. A pleasant form of paresthesia, [5] it has been compared with auditory-tactile synesthesia [6] [7] and may overlap ...
Bedtime procrastination causes people to feel that time is passing quickly, which can lead to anxiety and stress. [21] For people who do not sleep well, bedtime is an abominable time. Sleep can become a task and a burden that increases people's worry about getting enough sleep, leading to nervousness, and increases their psychological stress.
A chronotype is the behavioral manifestation of underlying circadian rhythm 's myriad of physical processes. A person's chronotype is the propensity for the individual to sleep at a particular time during a 24-hour period. Eveningness (delayed sleep period; most active and alert in the evening) and morningness (advanced sleep period; most ...
An end mill is a type of milling cutter, a cutting tool used in industrial milling applications. They can have several end configurations: round (ball), tapered, or straight are a few popular types. They are most commonly used in "milling machines" that move a piece of material against the end mill to remove chips of the material to create a ...
Similar to an endmill but with flat-bottom plunging ability. The tool at E, a counterbore, is also often used for spotfacing in manual machining (not so much in CNC machining). A spotface or spot face is a machined feature in which a certain region of the workpiece (a spot) is faced, providing a smooth, flat, accurately located surface.
Getty Images (2) Brittany Cartwright is speaking out after filing for divorce from Jax Taylor, explaining her decision “wasn’t made lightly or quickly.” “It’s been a big week ...