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The Old Bedford River, photographed from the bridge at Welney, Norfolk (2008); the camera is looking downstream, south-west of the bridge. The Bedford Level experiment was a series of observations carried out along a 6-mile (10 km) length of the Old Bedford River on the Bedford Level of the Cambridgeshire Fens in the United Kingdom during the 19th and early 20th centuries to deny the curvature ...
Refraction can give the impression that Earth's surface is flat, curved more convexly than it is, or even that it is concave (this is what happened in various trials of the Bedford Level experiment). The phenomenon of variable atmospheric bending can be seen when distant objects appear to be broken into pieces or even turned upside down.
To fairly represent the Bedford Level (or other) experiment, there would need to be 1,000 marker poles placed between the two letters T and A in the above diagram and each of the 1,000 marker poles would be 1 mile (1.609 km) apart, given that the Earth is 24,901 miles (40,075 km) in circumference.
Henry Yule Oldham, (14 December 1862 – 14 March 1951) was a teacher and geographer who, in 1901, conducted the definitive version of the Bedford Level experiment, a proof that the Earth is a sphere.
Rowbotham started out as an organiser of an Owenite community at Manea in the Fens, where he formulated his ideas about the Earth.After measuring a lack of curvature on the long straight drainage ditches of the Bedford Levels in his first Bedford Level experiment, he was convinced of the flatness of the Earth and began to lecture on the topic.
Experimental Design Diagram (EDD) is a diagram used in science to design an experiment.This diagram helps to identify the essential components of an experiment. It includes a title, the research hypothesis and null hypothesis, the independent variable, the levels of the independent variable, the number of trials, the dependent variable, the operational definition of the dependent variable and ...
Funds for the work were provided by the Earl of Bedford and thirteen other Adventurers. Of the land reclaimed, the fourteen men were to receive 43,000 acres (170 km 2 ), to be shared between them, while 12,000 acres (49 km 2 ) were to be given to the king, and another 40,000 acres (160 km 2 ) were designated to provide income to maintain the ...
Plackett–Burman designs are experimental designs presented in 1946 by Robin L. Plackett and J. P. Burman while working in the British Ministry of Supply. [1] Their goal was to find experimental designs for investigating the dependence of some measured quantity on a number of independent variables (factors), each taking L levels, in such a way as to minimize the variance of the estimates of ...