Popping crease is a term that was used in the game cricket in the past. Popping crease was when batmen would have to pop their bat into a hole located in the middle of a crease to get a run.
One rule is that once you start the bowl, you can't stop in the middle of it. Another one is that you have to bowl behind the crease or it will be a no ball.
In cricket's rule number 9(specified by Marleybone Cricket Club or the MCC),the bowling crease,which is the line the stumps are in the middle of, is drawn at each end of the pitch so that the three stumps in the set of stumps at that end of the pitch fall on it (and consequently it is perpendicular to the imaginary line joining the centres of both middle stumps). Each bowling crease should be 8 feet 8 inches (2.64 m) in length, centred on the middle stump at each end, and each bowling crease terminates at one of the return creases. The popping crease, which determines whether a batsman is in his ground or not, and which is used in determining front-foot no balls (see law 24), is drawn at each end of the pitch in front of each of the two sets of stumps. The popping crease must be 4 feet (1.22 m) in front of and parallel to the bowling crease. Although it is considered to have unlimited length, the popping crease must be marked to at least 6 feet (1.83 metres) on either side of the imaginary line joining the centres of the middle stumps. The return creases, which are the lines a bowler must be within when making a delivery, are drawn on each side of each set of the stumps, along each sides of the pitch (so there are four return creases in all, one on either side of both sets of stumps). The return creases lie perpendicular to the popping crease and the bowling crease, 4 feet 4 inches (1.32 m) either side of and parallel to the imaginary line joining the centres of the two middle stumps. Each return crease terminates at one end at the popping crease but the other end is considered to be unlimited in length and must be marked to a minimum of 8 feet (2.44 m) from the popping crease.
For the hay barrels you have to make sure that they are in the middle. After they are both in the middle you jump ontop of the crease between them and they should open!
The distance of 90 feet (between home and first) is the distance of the middle of the plate and the middle of first base.
valley fold is folded at a crease in wich the outer edges are higher than the middle. mountain the opposite.
About $2.00
The closest G to Middle C is the G below it. The distance (or interval) between them is a perfect fourth.
the radius.
The distance between a line through the middle of a wave and a crest or trough is called the amplitude. It represents half the distance between a crest and a trough, or the maximum displacement of a wave from its equilibrium position.
a yard
First, start with your two wicket lines(where the stumps are placed). They are to be 22yds (66ft) apart with three stumps at one end in line with the three at the other. Then paint the bowling crease, 4ft in front of the wicket line, and should extend 4ft either side of the return crease. If you need wide lines for a one-day match, they are made 75cm from the outside of off stump. Last, but not least are the danger area markings. These are to be only 2 inches long and are place 1ft either side of middle stump going backwards from the bowling crease and 5ft in front of the popping crease on either side of the pitch.