I agree with the person above - the planet Pluto was considered to be quite small to even be called a planet. After scientists found objects in space which were similar in size to Pluto (and were not planets), they questioned the "planethood" of Pluto. After that, it became a dwarf planet, and not just a regular planet.
Answer:
Read this excerpt from Robert Stawell Ball’s Great Astronomers: Though every child may now know more of the actual truths of the celestial motions than ever Ptolemy knew, yet the fact that his work exercised such an astonishing effect on the human intellect for some sixty generations, shows that it must have been an extraordinary production. We must look into the career of this wonderful man to discover wherein lay the secret of that marvellous success which made him the unchallenged instructor of the human race for such a protracted period. Based on the context of the excerpt, what does the word protracted most clearly mean? seeming to be truthful weighing an excessive amount extending in a specific direction continuing for a long time being exceptional or talented
Answer: if there is no context, the event gets isolated. Isolating events is one of the strategies of propaganda, indoctrination and manipulation.
Explanation: context gives us frame of reference, spirit of the time (Zeitgeist) and thus we view things from better perspective. If not, we tend to project our own contemporary perspective on the event.
The very first commercial photography process was called an <span>ambrotype. This was the most popular type of photographs in the 1850's. </span>
