Um den Zeitablauf zu verdeutlichen, kann an der Rückseite des Time Timer ein subtiles Signal eingestellt werden. Der Time Timer kann stehend oder hängend verwendet werden. Das komplett neue Design ist das Ergebnis von 20 Jahren Erfahrung und Innovation.
#Stopwatch plus plus#
Die einfache Steuerung des Time Timer Plus eignet sich für alle Altersgruppen. Es ist die perfekte Unterstützung im Klassenzimmer, zu Hause, in der Praxis, und im Büro.ĭer Time Timer PLUS verfügt über ein transparentes Kunststoffglas, um die "türkise Scheibe" zu schützen. For stopwatches, the units of time that are generally used when observing a stopwatch are minutes, seconds, and 'one-hundredth of a second'.Die patentierte türkise Scheibe zeigt, wie viel Zeit noch übrig ist und beantwortet die universelle Frage "Wie lange noch?". In most science experiments, researchers will normally use SI or the International System of Units on any of their experiments. To get more accurate results, most researchers use the propagation of uncertainty equation in order to reduce any error in experiments.
#Stopwatch plus manual#
The average measurement error using manual timing was evaluated to be around 0.04 s when compared to electronic timing, in this case for a running sprint. However, in most situations where a stopwatch is used, there are indicators that the timing event is about to happen, and the manual action of starting/stopping the timer can be much more accurate. Normally, humans will take about 180–200 milliseconds to detect and respond to visual stimulus.
#Stopwatch plus portable#
The stopwatch function is also present as an additional function of many electronic devices such as wristwatches, cell phones, portable music players, and computers.Įven though stopwatches are created to be more accurate, humans are still prone to make mistakes every time they use one. Laboratory experiments and sporting events like sprints are good examples. The device is used when time periods must be measured precisely and with a minimum of complications. Its first use was in ski racing but was later used by the World University Games in Moscow, Russia, the U.S. It utilized a Nixie-tube readout and provided a resolution of 1/1000 second. The first digital timer used in organized sports was the Digitimer, developed by Cox Electronic Systems, Inc.
Stopwatches that count by 1/100 of a second are commonly mistaken as counting milliseconds, rather than centiseconds. Some may have a connector for external sensors, allowing the stopwatch to be triggered by external events, thus measuring elapsed time far more accurately than is possible by pressing the buttons with one's finger. Because they contain a microchip, they often include date and time-of-day functions as well. Mechanical stopwatches are powered by a mainspring, which must be wound up by turning the knurled knob at the top of the stopwatch.ĭigital electronic stopwatches are available which, due to their crystal oscillator timing element, are much more accurate than mechanical timepieces.
Pressing the split button a second time allows the watch to resume display of total time. When the split time button is pressed while the watch is running it allows the elapsed time to that point to be read, but the watch mechanism continues running to record total elapsed time. The second button is also used to record split times or lap times. A press of the second button then resets the stopwatch to zero. Pressing the top button starts the timer running, and pressing the button a second time stops it, leaving the elapsed time displayed. The timing functions are traditionally controlled by two buttons on the case. In fully automatic time, both starting and stopping are triggered automatically, by sensors. In manual timing, the clock is started and stopped by a person pressing a button. The text below the image shows the time that corresponds to the movement of the indicator around the stopwatch.Ī stopwatch is a timepiece designed to measure the amount of time that elapses between its activation and deactivation.Ī large digital version of a stopwatch designed for viewing at a distance, as in a sports stadium, is called a stop clock.
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