Episode #741 April 15, 2023 The Earth is not flat. https://www.youtube.com/watch?v=X5z-jjWyAJQ Prior to ancient Greek calculations, observation dictated that the Earth was flat. The popular belief was that ships sailing far enough to sea would fall off the edge. Those Greek calculations showed that the Earth was a sphere, but no one could prove it. Prior to Columbus’s attempt to sail to Asia there was no direct evidence that the earth was round. Some observation suggested the Earth’s roundness, such as the fact that a sailboat sailing out to sea disappeared from the boat’s hull to the tip...
Episode #740 April 8, 2023 Everything will soon have an Internet Protocol (IP) address. Otherwise nothing will be able to communicate with anything else. https://www.youtube.com/watch?v=mlwfGh-SVXw IPv4 (Internet Protocol version 4) was first widely used on the Advanced Research Projects Agency Network (ARPANET). ARPANET’s main purpose was for communication between academic and research projects. In order to find all the computers on the network, unique addresses needed to be assigned. IPv4 provided 4.3 billion addresses. Each address was an octet (four numbers) between 0 and 255, separated by dots, such as 74.116.145.171. Type “what is my ip address” in...
Episode #739 April 1, 2023 Chuck Yeager is sitting in the orange, bullet shaped X-1. It is tucked under the belly of a B-29 bomber at 20,000 feet above the dry lake bed of Muroc Army Air Force Base, California. This is the 50th flight of the Bell X-1 rocket plane. https://www.youtube.com/watch?v=fVEmvtJiIOo The bomber is pushed into a dive to achieve a drop speed of 260 MPH. Any slower and the X-1 will not glide smoothly prior to engine fire. The X-1 is prematurely released at the slower speed of 240 MPH and becomes unstable. Most pilots would pull back...
Episode #738 March 25, 2023 When we communicate we use language. Whether it is through gesture, speech or writing we convey an idea, one to the other. https://www.youtube.com/watch?v=8Gv0H-vPoDc Sometimes all that is necessary to communicate is a nod. Sometimes it is a wave of the hand. Our faces communicate subtleties of emotion. It is why androids look like robots. It is why Zoom is better than the telephone. We depend on gesture in obvious and tenuous ways. A blind person must depend on intonation, volume and guttural sounds to understand a conversation because they cannot see. Speech requires vocalization and...
Episode #737 March 18, 2023 I have always tried to think a project through from beginning to end. I almost always do a mental walk through and in-depth research to nail down the details. Failure to do so always has consequences. https://www.youtube.com/watch?v=xe_jt8Ad-Ho When Paula and I bought our house there was one unsatisfactory feature of the house. The master bathroom had a tub without a shower. In fact, the tub had not been used in years. When I turned on the tub water it ran brown. A shower could not be added because the tub sat under the low slope...
Episode #736 March 11, 2023 I am a freak of nature. Evolution has played funny tricks on me. https://www.youtube.com/watch?v=rsewNuhKupk I was at a dental appointment around the age of fifteen. After X-rays the dentist told my parents: “Ricki was born without the seeds of wisdom teeth.” “Is that bad?” asked my father. “It is fairly common for wisdom teeth not to emerge … stay under the gums for a person’s entire life. It is less common for the wisdom teeth to never develop at all.” “What are the consequences?” asked my mother. “It is actually good news since there...