How to read a physical stopwatch??? Not a translation!!

The large circle indicates the number of seconds, the small circle indicates the fraction, and in general, the minute hand reading plus the second hand reading can be done, that is, "minutes and seconds".

But when reading the second hand, there is a "catty": look at the minute hand first, if the finger is 2'to 3', then read the minute hand as 2'.Next, look at the position of the minute hand if it has not already passed', then the second hand points to how many seconds read as many seconds; But if the minute hand is in more than one position', then you have to add 30 to the actual indicated number when reading the second hand''(Because the second hand turns two weeks is only 1 minute).

How to read a stopwatch, the teacher teaches.

It is divided into two dials, the large dial is the minute dial, and the minimum scale is the minute.

The subdial has a minimum scale of 1 second. When reading, pay attention to the estimated reading seconds.

Stopwatch: The subdial indicates the minutes, a total of 15 minutes, that is, the maximum range of the stopwatch to record the time is 15 minutes Note that there is also a half-minute mark between two adjacent integers

When reading, read the subdial first The short hand indicates a few minutes if it is more than a few minutes, pay attention to whether the short hand exceeds the half-minute line, and then it has a great impact on the reading of the large dial (if it is more than 1 minute, read 1 minute, if it is more than 2 minutes, read it for 2 minutes, and so on.)

Then read the large dial, pay attention to the large dial is divided into 30 large grids, each large grid is 1 second, one circle is only 30 seconds, two circles only have 60 seconds So when the long hand turns the first turn, read the number between 1 and 30 When the long hand turns the second turn, read the number between 31 and 60 (note that 60 is the 0 in the next 1 second).

But is it the first lap? Or is it the second lap? It depends on whether the position of the short hand of the subdial exceeds the half-minute mark, and if it is not exceeded, it is the first circle, and the number between 1 and 30 seconds is read in the second circle

The number below the last count is divided into 10 equal parts, and each minute is a second Note that this is not a base 60, but a base 10

However, it is necessary to estimate one more person below 0 1 second

Note that the units of time are minutes (min) and seconds (s), not to be confused with the units of angle. I borrowed it for the convenience of recording at the sports meeting. Don't get confused in physical comprehension questions.

How to read the stopwatch:

1. If the pointer in the small disc on the stopwatch rotates, it means that the measurement time has exceeded half a minute, when reading, first read the time in the small disc inside, and then add the time pointed by the long hand in the large disc, and the addition of the two is the reading of the stopwatch.

2. If the pointer in the small disc does not rotate, indicating that the measurement time is less than half a minute, the time to read the long hand directly is the reading of the stopwatch, that is, the reading of the stopwatch T = short hand reading (1) + long hand reading (T2).

The reading of the stopwatch: the large circle is the second, and the small circle is the minute. If the large circle is 30 minutes (the top is written 30, there may be 60 grids, indicating the accuracy to half a second), the small circle is divided into two small grids in one minute, read the complete number of points, if a small grid passes, add half a minute to the number of seconds in the large circle, if not, directly read the number of seconds in the large circle.

The dial has a long second hand and a short minute hand, the second hand turns one step and the minute hand turns one stop. There are two commonly used indexing values for stopwatches.

It is timed by controlling the rotation of the hand by using the isochronism of the pendulum. On its front is a large dial with a subdial above it. The second hand rotates along the major dial, and the minute hand rotates along the subdial. The sum of the time indicated by the minute and second hands is the measured time interval.

Directly above the table there is a watch handle with a button on it. Turn the button and wind it up, this is the power for the stopwatch to move. Press the button with your thumb and the stopwatch starts the timer; Press the button again, the stopwatch stops moving and takes a reading; Press it again and the stopwatch returns to zero, ready for the next timer.

The middle inner circle is read as "minutes", the outer circle is read as "seconds", the large circle is 60 grids, a circle is one minute, no matter whether the small circle is more than half a grid, do not need to add 30 seconds, directly read "seconds", as shown in the following figure:

1. The movement of the hands of the large dial indicates that after 30s, the graduation value of the large dial is;

2. The movement of the subdial hand indicates that 15min has passed, and the index value of the subdial is 1min.

The size of the stopwatch is different and the dial represents the time of the week and the index value are different, so it is necessary to observe carefully to prevent mistakes.

Answer, 1, if the stopwatch on the small disc in the pointer has turned, it means that the measurement time has been more than half a minute, when reading, first read the time in the small disc inside, and then add the time pointed by the long pointer in the large disc, the addition of the two is the reading of the stopwatch. 2. If the pointer in the small disc does not rotate, indicating that the measurement time is less than half a minute, the time to read the long hand directly is the reading of the stopwatch, that is, the reading of the stopwatch T = short hand reading (1) + long hand reading (T2).

The stopwatch is divided into two dials, the inner dial is 30 seconds per grid, and the outer dial is 30 seconds around the circle, as long as the readings of the two are added up.

If the large dial is divided into 5 divisions from 60 to 5, then each compartment is 1 second, and each compartment is subdivided into 5 divisions, which is its graduation value, i.e., seconds. The subdial is divided into 5 divisions from 30 to 5 for 1 minute, and each division is the graduation value, which is 1 minute.

The subdial measures 30 minutes around the week, and the stopwatch reads 27 minutes and 20 seconds.

The index value depends on the specific kind of stopwatch, the stopwatch according to the minimum index value has: ,, four kinds, a circle of the general circle of 30s, a second in the middle of 10 small grids then the index value, the total of the small circle has 15 grids, one minute per grid, the stopwatch reading should not be estimated below the index value and then read one place, when the second hand is between the two scale values, it can be read according to the principle of "rounding".

Hours, minutes, seconds, milliseconds, you just look at the unit markers on the big circles and the small circles.

Among them, the large circle indicates the number of seconds, and the small circle indicates the fraction, and under normal circumstances, the minute hand reading plus the second hand reading can be, that is, "minutes and seconds".

But when reading the second hand, there is a "catty": look at the minute hand first, if the finger is 2'to 3', then read the minute hand as 2'.Next, look at the position of the minute hand if it has not yet been exceeded', then the second hand points to how many seconds read as many seconds; But if the minute hand is in more than one position', then you have to add 30 to the actual indicated number when reading the second hand''(Because the second hand turns two weeks is only 1 minute).

2. To read the value of the second hand, it needs to be reminded that the minimum tick mark of the second hand is the second interval time, and the integer part is not estimated to be read.

3. Add the value n of the minute hand and the value m of the second hand, and pay attention to the unity of the unit.

The one in the middle is the minute, the outer one is the second, and the big hand is 30 seconds per lap, and the two laps are 60 seconds per minute.

The stopwatch has a few seconds for a large lap and a few minutes for a small lap.

If the large circle is 30 squares (30 is written on the top, there may be 60 squares, indicating that the accuracy is half a second), the small circle is divided into two small squares in one minute, and the complete number of points is read. Grip the code.

If a small square has passed, add half a minute to the large circle of seconds, and if not, read the large circle of seconds directly. If the circle is 60 points.

Correct way to stop meter readings:

There are two types of stops, mechanical stops and electronic stops. Electronic stopwatch is a more advanced electronic timer, the current domestic electronic stopwatch generally uses the oscillation frequency of the quartz oscillator as the time benchmark, and uses 6-digit liquid crystal digital display time.

The electronic stopwatch is more functional than the mechanical stopwatch, it can not only display the minutes and seconds, but also the hour, day, month and day, and have a function of one hundredth.

The accuracy of the electronic stop meter can be as high as the second. The basic display of the chronograph status is hours, minutes, and seconds.

If the electronic stopwatch needs to be corrected and adjusted at the time, it can be pressed and held continuously, and when the seconds of the hours, minutes and seconds flash, then release it, and then press intermittently until the correct number of seconds to be adjusted is displayed.

If you still need to correct the score, you can press it once, and then the number of the displayed score flashes, and then press intermittently until the desired correct score is displayed. <>

Here's how the stopwatch reads:

The stopwatch has two circles, the middle inner circle is read as "minutes", the outer circle is read as "seconds", the large circle is 60 grids, and a circle is one minute, regardless of whether the small circle is more than half a grid, you don't need to add 30 seconds, and directly read "seconds".

The small circle pointer is between "5" and "6", which reads "5 minutes", and the large circle pointer is exactly at "", which reads "seconds", so the stopwatch in the figure reads ".

How to use the stopwatch.

When using the stopwatch, the first press, the stopwatch starts the timer, press again, the hands stop moving, indicating the time between two presses, the third press, both hands return to the zero scale.

The hands of the small disc rotate and the reading is 1 minute, and it is more than one and a half minutes, so when reading, the large disc should read the red withered number without the front, and the final reading result is: 1 minute and second. <>

Reading the stopwatch can be done by following these steps:

1.Get a stopwatch: You can use an app on your phone, a professional timer device, or even a regular watch with the second hand.

2.Start the stopwatch: Depending on the specific device you're using, there are a few ways to start the stopwatch.

Professional Timer Device: Press the start button or the corresponding control button according to the instructions on the device.

Watch: Adjust the second hand to 12 o'clock and start the timer.

3.Timing: Once the stopwatch is activated, you can start to calculate the rental when the socks are finished.

4.Stop the stopwatch: When it's time to stop the timer, do the following:

Mobile app: Tap the stop button or the stop reset button of Phase Wise.

Professional timer device: Press the stop button or the corresponding control button.

Watch: Adjust the second hand back to 12 o'clock.

Please note that different stopwatch devices and apps may have different functions and ways of operation. The steps above provide general guidance that you may need to do depending on the specific device or application you're using.