
For light...




Let me next trace the Muslim expansion in cartoon fashion now, beginning in 305. I have the outline from a kid’s site, MrDonn (that’s where one really learns things) (link). The map’s a little clumsy; the Black Sea is a little tilted. Muslim expansion began in the east just about 300 years later (in 630). The Byzantines lost their African holdings as well as the Levant. These thrusts reached well into Byzantine territories so that the Empire had to defeat the Muslims twice (674, 714) just to hold on to Constantinople. In the west the Arabs invaded Spain (then the Visigothic Christian Kingdoms) in 711. By 732 they had penetrated into France, but they were stopped, and rolled back, in the Battle of Tours. I show the situation in 750 AD.Time is a man-made reference used for convenience and as such the idea of a “curved space-time” is delusional, hence there is no basis for the Relativistic “space-time” binomium concept. I hold that space cannot be curved, for the simple reason that it can have no properties. It might as well be said that God has properties. He has not, but only attributes and these are of our own making. Of properties we can only speak when dealing with matter filling the space. To say that in the presence of large bodies space becomes curved is equivalent to stating that something can act upon nothing. I, for one, refuse to subscribe to such a view. [Nikola Tesla quoted in New York Herald Tribune, September 11, 1932]The world is vast, my education spotty, hence I recognized the name but could not do much more than that. The thought expressed, however, is most congenial. I’ve always had major problems both with spacetime and with time dilation—thus the concept that time slows down with speed of travel, and the astronaut wandering out there at near-light speed would return from his years-long trip to find that he was much younger than his twin brother. At one time I spent real concentrated time studying Einstein’s theories—in the original, at that—and came to the conclusion that while clocks certainly did slow down with speed, it was the clocks that misbehaved, not time. Therefore I’m not persuaded that time dilation has been proved. I have similar problems with thinking of time as a dimension (except as a math token) and with dimensions beyond the conventional three.
In standard use nonplussed means ‘surprised and confused’, as in she was nonplussed at his eagerness to help out. In North American English a new use has developed in recent years, meaning ‘unperturbed’ — more or less the opposite of its traditional meaning — as in he was clearly trying to appear nonplussed. This new use probably arose on the assumption that non- was the normal negative prefix and must therefore have a negative meaning. It is not considered part of standard English.Not part of “standard English”! Looks like we’ve done it again. The comment I read came from a relatively young American. So I still don’t really know what the comment meant. But, it seems to me, my old policy was a good one and needs only a small adjustment. When Agatha Christie uses the word, I can read the meaning as baffled. But when it comes from a young American, I must discretely look the other way.