Hi Martin. Hope this helps as it has metric equivalents
https://nam10.safelinks.protection.outlook.com/?url=https%3A%2F%2Fcricketmastery.com%2F30-yard-circle-in-cricket%2F&data=04%7C01%7Cusma%40lists.colostate.edu%7Cb86495cdc24f429cc99b08d959206db1%7Cafb58802ff7a4bb1ab21367ff2ecfc8b%7C0%7C0%7C637638819433602782%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&sdata=6D47NorPf3%2Faa56BavU6cY%2Bf%2FmnXwAHn2UfnLOYKj%2BY%3D&reserved=0 Sent from my iPhone On 6 Aug 2021, at 10:19 pm, Stephen Humphreys <[email protected]> wrote: It’s called the 30 yard circle. It’s universally known in clubs , regions , leagues , county , country and village as well as television. It’s different for the female version but everyone talks about it this way. You’ll know as you are an umpire. Great game Playing at village level on Sunday. I’m not sure why you have picked the least metric and most imperial game but I know you have South African heritage so you’re let off 😘 Sent from my iPhone On 6 Aug 2021, at 9:39 pm, [email protected] wrote: Yes, I am a unique umpire. Like every other umpire who is ACO registered, I have a unique number. There is no consistent name for this area. In the 50-over generic playing condition for non-first-class cricket, the ECB calls the area inside the "circle" (as you call it) the "fielding restricted area", but in the 20-over generic playing conditions, it is called "the fielding circle". -----Original Message----- From: Stephen Humphreys <[email protected]> Sent: 05 August 2021 23:20 To: [email protected] Cc: Brian White <[email protected]>; USMA List Server <[email protected]> Subject: Re: [USMA 1776] Re: Olympic Tennis Metrics You are an unique cricket umpire, Martin :-) What do you call ’the circle’ that decides the position of players in limited overs games? On 5 Aug 2021, at 9:41 pm, <[email protected]> <[email protected]> wrote: I am a qualified cricket umpire. One of the questions for an umpire in the lower leagues (where we cannot ask for a television replay or rely on microphones embedded in the stumps) is whether a "click" from the ball as it passes the batsman was the ball hitting the batsman's bat or pads. Given that sound travels at 300 m/s (I measured it at 331 m/s in the laboratory as part of an undergraduate practical class) tells me that it takes about 0.08 seconds for the sound to reach me (assuming that I ma standing 6 or 7 metres behind the stumps). If the ball is travelling at 40 m/s, then in that time it will travel about 3 metres. Therefore, when the umpire hears the click, the ball will have travelled 3 metres from where it was when the click was generated. Therefore, do not put too much emphasis on the when the "click" happened. -----Original Message----- From: Stephen Humphreys <[email protected]> Sent: 05 August 2021 16:53 To: Brian White <[email protected]> Cc: [email protected]; USMA List Server <[email protected]> Subject: Re: [USMA 1776] Re: Olympic Tennis Metrics I’m a member of a cricket club and play the game often. No one watches the ball each second TBF. Its all over by the time your stumps are smashed. From batter to bowler its < 1s We are ‘aware’ of speed so when we receive a 75mph ball (we cant get to international standard speeds) you get a sense of the ball coming at you at motorway car speed. Similarly there are spin bowlers who bowl [sometimes half that speed] much slower but are hard to hit. ITs just something we’re use to. The speed metric (excuse the pun) of mph is just something extremely familiar and is a big part of the game. Metric countries would be familiar with what a 130 km/h ball ‘feels’ like. We have a bowling machine where you set the speed before you release balls in to it. As yet no-one has complained about the ‘hour’ bit being difficult to judge due to time and some of the younger members are highly numerate. We just associate it with something familiar as we stand as a target for the ball. On 5 Aug 2021, at 2:41 pm, Brian White <[email protected]> wrote: Your friend. On Aug 5, 2021, at 02:11, [email protected] wrote: Those who are innumerate yes. Those who are highly numerate prefer the metric system for its very simplicity. Those who want to extract a little more information from the numbers, in the manner that I have described no. Likewise, if I see leaves being blown by the wind, I can estimate how far those leaves are going in one second, but not in one hour. Some years ago a friend and I were trying to estimate the diameter of a sphere that contained 2000 ton(ne)s of water without resorting to pen, paper or calculator. I made the assumption that one tonne of water has a volume of one cubic metre. My friend made the assumption that one ton of water is equal to 2240 pounds and that one cubic foot of water weighed 62.5 pounds. Guess who got the answer first? -----Original Message----- From: Brian White <[email protected]> Sent: 04 August 2021 23:10 To: [email protected] Cc: Martin Morrison <[email protected]>; USMA List Server <[email protected]> Subject: Re: [USMA 1771] Re: Olympic Tennis Metrics Bah. Everyone equates it to speed in a vehicle. Simple as that. On Aug 4, 2021, at 16:16, [email protected] wrote: Quoting the speed of a tennis ball, baseball ball or cricket ball in km/h is not very helpful. Has anyone ever seen one of these balls travel for an hour. Using m/s makes for more sense. In baseball, the distance from the pitcher to the plate is 18.39 metres (or 60'6"). If the pitcher delivers the ball at a speed of 100 mph, how long does the batter have before the ball gets to him? If he pitches it at 44 m/s (the exact conversion is 44.69444), it is easy to see that he batter will have about 0.4 s (18.39/44). Martin -----Original Message----- From: USMA <[email protected]> On Behalf Of [email protected] Sent: 04 August 2021 21:58 To: USMA List Server <[email protected]> Subject: [USMA 1768] Olympic Tennis Metrics From an internet posting: "I'm a metric system enthusiast but the Olympic baseball broadcast is displaying pitch speed in km/h, and I am grateful that our stupid measurement system happens to work out so that "100 = A Very Fast Pitch." 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