We know that it is older than Christendom, but whether by a couple of years or a couple of centuries, or even by more than a millenium, we can do no more than guess." [Rasmus Nyerup, (Danish antiquarian), 1802 (in Trigger, 19)].
Nyerup's words illustrate poignantly the critical power and importance of dating; to order time.
Therefore, the depth of field is limited to only one layer of cells.
You must focus up and down using the fine adjustment knob on the microscope to see both layers of cells.: Shrinkage of the protoplast or cell contents due to water loss when a drop of salt water (Na Cl) is added to the Elodea slide.
Renfrew (1973) called it 'the radiocarbon revolution' in describing its impact upon the human sciences.) a measure or estimate of the degree of confidence one may have in the occurrence of an event, measured on a scale from zero (impossibility) to one (certainty).It may be defined as the proportion of favourable outcomes to the total number of possibilities if these are indifferent ( Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. 1979, 1986 © Harper Collins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012 Cite This Source (prŏb'ə-bĭl'ĭ-tē) A number expressing the likelihood of the occurrence of a given event, especially a fraction expressing how many times the event will happen in a given number of tests or experiments.Thus, the probability of drawing the ten of clubs from an ordinary deck of cards is one in fifty-two (), or one fifty-second.the fall of 1964, on a visit to the World’s Fair, in Queens, Lewis Altfest, a twenty-five-year-old accountant, came upon an open-air display called the Parker Pen Pavilion, where a giant computer clicked and whirred at the job of selecting foreign pen pals for curious pavilion visitors. Within a year, more than five thousand subscribers had signed on. It would invite dozens of matched couples to singles parties, knowing that people might be more comfortable in a group setting. They wound up in the pages of the New York subscriber.