Answer:
Sir William Crookes invented the cathode ray tube in 1878, but these discoveries took many years to merge into the common ground of television. His mechanical system used a scanning disk with small holes to pick up image fragments and imprint them on a light-sensitive selenium tube. A receiver reassembled the picture.
Definition of Grit. According to researchers at the University of Penn- sylvania, grit is defined as "perseverance and passion for long-term goals.” Grit involves working strenuously to- ward challenges, maintaining effort and interest over years despite failure, adversity, and plateaus in progress.
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Answer: hey did you find the answer? Do you mind telling me it?
Explanation:
It takes places during surveying.
For example, let's say you want to review your own produced game application software, and found out whether it satisfy your consumer or not
Before you conduct the survey, you have to identify what aspect you want to find out from your consumers , such as : Does it have any bug ? Is it challenging enough ? is the graphic good enough ? etc
