Earlier estimates of the circumference of Earth had been made (for example, Aristotle says that "some mathematicians" had obtained a value of 400,000 stadia), but no details of their methods have survived.
In 1916 Robert Andrews Millikan measured both the frequency of the light and the kinetic energy of the electron emitted by the photoelectric effect and obtained a value for Planck's constant h in close agreement with the value that had been arrived at by fitting Planck's radiation law to the blackbody spectrum obtained by Wien.
A Chinese survey in 1975 obtained the figure of 29,029.24 feet (8,848.11 metres), and an Italian survey, using satellite surveying techniques, obtained a value of 29,108 feet (8,872 metres) in 1987, but questions arose about the methods used.
German astronomer Friedrich Wilhelm Bessel obtained a value of 10.3 light-years in 1838; the European Space Agency satellite Hipparcos made much more accurate distance measurements than ground-based telescopes had accomplished and obtained a distance to 61 Cygni of 11.4 light-years.
They obtained a value of 149 185 dollars for this reduction.
From this measurement, we have obtained a value of 5 W/(K·m), confirming the validity of our simulation methodology.
Based on verification using the questionnaire of Technology Acceptance Model (TAM) to 30 students obtained a value of 3.52 which indicates that the tutorial props are quite acceptable.
Maus et al. (2007) obtained a value of 15 km as the correlation length for gridded magnetic data of the former Soviet Union, Australia, and North America.
Yang et al. [17] studied the EMI shielding applications of CNT PS foam composites and obtained a value of about 20 dB at 7 wt% loading.
When calculating the Vargha-Delaney A-statistic, we obtained a value of 0.559 which indicates a "small" standardized effect size [28].
On the one hand, we used the social presence scale which has proved valid in previous studies (Vega Caro, 2013; Vega-Caro & Buzón-García, 2016), and in this study we obtained a value of Rho = .311 (p ≤ .01).01
