时针一小时走多少度,请问时针一小时走多少公里?
据和记百科网站「青栀如初」消息,近日,时针一小时走多少度,请问时针一小时走多少公里?引发热议,时针一小时走多少公里同样引起许多争议,对此众网友各抒己见。但到底是怎么回事呢?和记百科为您解答。
30度。分针每分钟走一格,一个圆周有60格。360/60=6度,所以每分钟走6度。时针每小时走5格,60分钟走30度,每分钟走0.5度。分针走20分钟120度,时针10度。
时针:计时器上指示小时的指针,钟表等计时器表面上的针形零件有长针和短针之别,短针指示“时”,称“时针”。
顺时针:是指和钟表的转动方向一样的转动。时针之所以“顺时针”转动,是源自其前身日晷。时针首先出现于北半球,其作用与日晷投射在地上的“影子指针”相似。太阳由东边升起西边落下,它投射在日晷上的影子之运行方向相反,是由西向东,所以日晷上代表时间的数字排列也是如此,现代时钟表面数字沿用了这种排列方式。
逆时针:是和顺时针相反之,代表的是逆时针的转动。物体是顺时针转动或是逆时针转动,与观察角度有关。例如地球的自转,从北极正上方观看,是逆时针,从南极正上方看,则是顺时针。在数学上,顺时针旋转的角为负角,逆时针旋转的角为正角。
问:时针一小时走多少公里?
答:时针一小时走多少公里,需要先了解一个基本的概念——周长。
时钟是一个圆形的装置,它的周长指的是顺着时钟的边缘走一圈所需的距离。它的计算公式是周长=2πr,其中π的值是3.14,r是时钟的半径。
以标准的时钟为例,其半径一般为约3.5厘米(实际值会因不同型号而有所不同),因此它的周长为2×3.14×3.5 ≈ 22厘米。
一小时有60分钟,每分钟时针会转动6度,也就是说时针每小时会转动360度。
既然知道了时针每小时会转动360度,那它每小时走的路程就可以用上面提到的周长来计算了。
时针每小时走的路程 = 时钟的周长 × 每小时转了几个圈
将上面算出的时钟周长代入公式,得到时针每小时走的路程约为22×360 ≈ 7920厘米,即7.92米。
所以,时针每小时大约走7.92公里。
需要注意的是,这个值只是一个近似值,实际的时钟和时针大小以及结构会影响其具体数值。
【英文介绍/For English】:
30 degrees. The minute hand moves one division per minute, and there are 60 divisions in a circle. 360/60 = 6 degrees, so walk 6 degrees per minute. The hour hand moves 5 steps per hour, 30 degrees in 60 minutes, and 0.5 degrees per minute. The minute hand moves 120 degrees in 20 minutes and the hour hand moves 10 degrees.
Hour hand: The pointer on the timer that indicates the hour, the needle-shaped parts on the surface of the clock and other timers are divided into long hands and short hands. The short hand indicates "hour", which is called "hour hand".
Clockwise: Refers to the rotation in the same direction as the clock. The reason why the hour hand turns "clockwise" is from its predecessor, the sundial. The hour hand first appeared in the northern hemisphere, and its function is similar to the "shadow hand" cast by a sundial on the ground. The sun rises from the east and sets in the west, and the shadow it casts on the sundial runs in the opposite direction, from west to east, so the arrangement of the numbers representing time on the sundial is also the same, and the numbers on the surface of modern clocks follow this arrangement.
Counterclockwise: It is the opposite of clockwise, representing counterclockwise rotation. Whether the object rotates clockwise or counterclockwise is related to the viewing angle. For example, the rotation of the earth is counterclockwise when viewed from directly above the North Pole, and clockwise when viewed from directly above the South Pole. Mathematically, an angle rotated clockwise is a negative angle, and an angle rotated counterclockwise is a positive angle.
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