Search results
Results from the WOW.Com Content Network
An hourglass (or sandglass, sand timer, or sand clock) is a device used to measure the passage of time. It comprises two glass bulbs connected vertically by a narrow neck that allows a regulated flow of a substance (historically sand) from the upper bulb to the lower one due to gravity. Typically, the upper and lower bulbs are symmetric as they ...
1859 Helmsman's marine sandglass, in a four-column wood stand. A marine sandglass is a timepiece of simple design that is a relative of the common hourglass, a marine (nautical) instrument known since the 14th century (although reasonably presumed to be of very ancient use and origin).
The earliest unambiguous evidence of the use an hourglass appears in the painting Allegory of Good Government, by the Italian artist Ambrogio Lorenzetti, from 1338. [ 68 ] The Portuguese navigator Ferdinand Magellan used 18 hourglasses on each ship during his circumnavigation of the globe in 1522. [ 69 ]
An example of a simple timer is an hourglass. Commonly, a timer triggers an alarm when it ends. A timer can be implemented through hardware or software. Stopwatches operate in the opposite direction, upwards from 00:00, measuring elapsed time since a given time instant. Time switches are timers that control an electric switch.
SAALBACH-HINTERGLEMM, Austria (AP) — The daughter of an off-road motorbike racer, Camille Rast knows what it takes to go over rough roads. The 25-year-old Rast crowned her breakout season on ...
"Still-Life with a Skull" by Philippe de Champaigne, c. 1671. The sands of time is an English idiom relating the passage of time to the sand in an hourglass.. The hourglass is an antiquated timing instrument consisting of two glass chambers connected vertically by a narrow passage which allows sand to trickle from the upper part to the lower by means of gravity.
Hourglass; Marine sandglass; Egg timer; It can also refer to: Sandglass, a 1995 Korean drama series; See also. Hourglass (disambiguation) Sandglaz, a ...
Get the Boydton, VA local weather forecast by the hour and the next 10 days.