Posts by Bob DeWoody

1) Message boards : Cafe SETI : What Are You Reading? (Message 1940219)
Posted 9 hours ago by Profile Bob DeWoody
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I'm reading on my Kindle "One Way" by S.J. Morden. It's about a group of convicts all serving life sentences with no parole who agree to be transported to Mars to build the first science base on the planet. One by one they are dying and one of the convicts thinks they were murdered. So it's a cross between a scifi novel and a murder mystery. I'm about halfway through it and so far I have stayed interested.
2) Message boards : SETI@home Science : Question of the METI? (Message 1940167)
Posted 14 hours ago by Profile Bob DeWoody
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Space language? I think that is expecting a bit much of our as yet undiscovered alien neighbors. They may not even communicate with each other in ways we mere mortal humans even understand.
3) Message boards : Cafe SETI : Sometimes I hate Walt Disney (Message 1939756)
Posted 3 days ago by Profile Bob DeWoody
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I grew up watching Walt Disney cartoons, including Mickey Mouse so that now when I contrive to kill a rat that has invaded my home and threatened my safety and the safety of my dog I end up feeling somewhat guilty about the rat's death. I won't lose any sleep over it but I do kind of wish there had been another way to get it out of my house.
4) Message boards : Cafe SETI : Suicide (Message 1939447)
Posted 5 days ago by Profile Bob DeWoody
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Even though I have had an often difficult life, even to the point, at times, where I wished I were dead I have never come close to contemplating suicide. I have to admit that I don't understand the thinking of a mind that leads a person to that extreme solution to his or her problems. All of the suicides I am familiar with have been committed by people who were at least moderately wealthy if not filthy rich.
5) Message boards : Politics : North Korea Part 3 (Message 1939444)
Posted 5 days ago by Profile Bob DeWoody
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Maybe it takes a mostly crazy president to work a deal with a completely crazy dictator. But, I ain't holding my breath waiting for N.K. to actually disarm their nukes. But I do also wonder how long, in this day and age of worldwide communications, the North Korean leaders can continue to keep their population in the dark about how bad they have it compared to the rest of the world and, more to the point, their South Korean brothers and sisters.
6) Message boards : Science (non-SETI) : Fusion power on the grid within 15 years? (Message 1939089)
Posted 8 days ago by Profile Bob DeWoody
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Breaking even isn't good enough for a commercial fusion power plant.
7) Message boards : Science (non-SETI) : A Curiosity discovery on Mars (Message 1939088)
Posted 8 days ago by Profile Bob DeWoody
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I think they are afraid to pronounce that there is life on Mars in any form. If true there could be a large contingent of scientists who would strive to prevent any future exploration of Mars involving humans actually going there.
8) Message boards : Cafe SETI : Going back to work landed me in the hospital (Message 1938965)
Posted 8 days ago by Profile Bob DeWoody
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Actually, I had taken the flu and pneumonia shot precautions back in January. I guess they just don't cover all the bases.
9) Message boards : Cafe SETI : Going back to work landed me in the hospital (Message 1938897)
Posted 9 days ago by Profile Bob DeWoody
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I know I posted about going to work as a substitute teacher but I can't find that thread. So, anyway early in May I got sick a few days after my last subbing gig. A bunch of kids were coughing and sneezing and apparently I picked up a virus. Thinking it was just a cold I took the usual remedies but it kept getting worse and after about 5 days I was almost too weak to get out of bed. I called a friend to come take me to the E.R. at the local hospital and after taking some blood and getting my chest x-rayed I was admitted with the diagnosis of having double pneumonia. I spent a week in the hospital and then another three weeks in a rehab facility. I was just released to go home yesterday.

Now I have two months to decide whether or not I want to resume the substitute teaching and if I do what precautions I need to take to prevent getting sick again.
10) Message boards : SETI@home Science : Oumuamua (Message 1930511)
Posted 17 Apr 2018 by Profile Bob DeWoody
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Well, one thing is for sure, even if the object is some sort of a space ark, they weren't looking for us or a planet like ours.
11) Message boards : Politics : Greatest Best Leader of ALL TIME Yep Dat BeeeZZZ Big BIg BIG Hands Golden Haired Long Black Coat Wearin; WINNING ALWAYS Prez #45 45ers Gots His Back. You, Not So Much.......Yap (Message 1930424)
Posted 17 Apr 2018 by Profile Bob DeWoody
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I can't find any articles citing a funding cut for the NEO observation program since 2015 under the administration of the previous POTUS
12) Message boards : Science (non-SETI) : SpaceX ready to launch again. (Message 1930381)
Posted 16 Apr 2018 by Profile Bob DeWoody
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The launch of the TESS satellite has been postponed until Wed. April 18th. The official reason was given as the need for additional time for instrument calibration. I also suspect that wind gusts in the area may have been cause for concern. It's been very gusty the last two days.
13) Message boards : Cafe SETI : Going back to work. (Message 1929098)
Posted 9 Apr 2018 by Profile Bob DeWoody
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Actually, I believe the public schools are putting out about as many college ready students as they always have. Good students find a way to get the information they need outside of the classroom, especially now with the availability of computers and the internet at home. The average students are probably suffering the most from the lack of control teachers have over the disruptive segment of the student body. The disruptors know that for the most part their behavior will not result in any action that frightens them. But that is the way the modern public school system works. In the old days the disruptive elements would be expelled repeatedly until reaching the age when they could drop out. Now they are kept in school and allowed to interfere with the learning process of the other students who are trying.
14) Message boards : Science (non-SETI) : Fusion power on the grid within 15 years? (Message 1929048)
Posted 9 Apr 2018 by Profile Bob DeWoody
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They have been postponing nuclear fusion for years now, while we have all the right technology to realize it today IMHO. Wendelstein 7x, the Stellarator type, has the perfect technology to accomplish the breakeven energy point, the only drawback is that the device has not been built on the right height. I have been working out an idea of my own (I've sent a lettre to Yuri Milner about it)

http://juliedetavernier.wixsite.com/rozz/single-post/2016/05/05/Some-thoughts-on-Nuclear-Fusion

Ahhh, do I detect a conspiracy theory here?
15) Message boards : Cafe SETI : Going back to work. (Message 1929047)
Posted 9 Apr 2018 by Profile Bob DeWoody
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That sounds crazy, Bob. I can't imagine trying to teach in that environment, not to mention trying to learn. I don't see how kids manage to graduate like that.

And perhaps now you begin to understand why China makes so much of what we consume.

I don't exactly see the connection but it wasn't my intention to turn this thread into a political discussion about China.
16) Message boards : Cafe SETI : Going back to work. (Message 1928539)
Posted 7 Apr 2018 by Profile Bob DeWoody
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I'm starting my third month of substitute teaching and I'm still alive. Yesterday, Friday the 6th of April was my most difficult day so far. I was called in to substitute for a middle school social studies teacher who had two periods of 6th grade world history and four periods of 7th grade civics. The 6th graders were supposed to be honors students and for the most part they were well behaved. They were studying early Chinese history. I pointed out to them that it may turn out to be very important to understand China. When I told them that as much as 80% of their electronic devices are manufactured in China they started showing a little interest. I told them that unless the leadership of the USA is very careful China just might end up controlling the USA, if not politically then economically. They all expressed their opinions that there is no way that could happen. My response was that they might want to pay more attention to the news feeds on their gizmos than the mindless games they are mostly all hooked on.

Two of the four 7th grade classes were the worst behaving group of students I have ever seen. One of the classes had 6 boys and 18 girls and it was the girls that created all the turmoil. They had just come from lunch and two groups of girls brought a heated argument into the classroom which I was only temporarily able to put a lid on. About midway into the period all hell broke out between the same two groups of girls and I ended up pushing the office call (panic) button when it appeared that a real fight was on the verge of happening. Things quieted down a bit when the students realized that I had actually called for help and three of the girls fled the classroom. It took over 5 minutes for someone from the office to arrive and esort some of the offenders back to the office. It is a good thing there were no weapons involved as I believe it might have gone that far.

This particular school has a reputation for having a large contingent of Latino and black students with behavior that is almost out of control. At the end of the day one of the other teachers in an adjacent class reassured me that I had probably done as good as anyone could have in that situation. I also found out there was supposed to have been a teachers aid in that class too. I was raised attending public schools in Florida 55 years ago and I don't recall any situations anywhere near this severe.

I sincerely doubt that I will accept any more assignments at this particular school. I don't need the money that much. I think a substitute that goes into a classroom environment like I did today needs extra hazardous duty pay. The other regular teacher I talked to told me that back in November almost 70 out of the 100 teachers assigned to that school called in sick one day. And this story didn't make it onto the local news.
I was so glad when Friday's last bell rang.
17) Message boards : SETI@home Science : Planet Hunters Report Record-Breaking Discovery, Search for other habitable planets (Message 1927255)
Posted 30 Mar 2018 by Profile Bob DeWoody
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Most hated command on Star Trek "Full Stop" like you are on an ocean on earth.
Scotty used this device:)

But I have thinking.
How did the Apollo missions succeed to stop at our moon?
The escape velocity from Earth is about 40,270 km/h, 25,020 mph.
That is real fast but somehow they landed safely.
Without so much jet propulsion to deaccelerate as far as I know.
Going back to Earth though is much easier.

Landing on a planet or asteroid is an entirely different scenario. There you are stopped relative to the body you landed on. Going into orbit around a planet or a moon you are not stopping so the "assume standard orbit" command is logical.
18) Message boards : Science (non-SETI) : Space Exploration News (Message 1927142)
Posted 29 Mar 2018 by Profile Bob DeWoody
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I just hope the Chinese don't try to take pot shots at it like they have done with previous satellites.
19) Message boards : SETI@home Science : Planet Hunters Report Record-Breaking Discovery, Search for other habitable planets (Message 1927141)
Posted 29 Mar 2018 by Profile Bob DeWoody
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Don't forget the deceleration at the other end of the journey, so +1g for one year, cruise for ~3.75 year then -1g for one year to get into an orbit around either the planet or a station keeping location for observation purposes.

There was some talk about "micro-g" accelerations to achieve fractional light speeds in a reasonable time, but again the energy required is substantial - one concept to be trialled is the use of solar sails, but that probably wouldn't work in the further reaches of the Solar system, never mind in the long interstellar part of the trip.

It depends on how much you can accelerate with the sail while the sun has any affect, then you would coast most of the distance to the target star. When in the vicinity of the target star you could use the sail to decelerate depending on strength of that star's solar wind.

My biggest gripe with Star Trek and most other space movies trying to be somewhat scientifically accurate is the notion that when you shut down your engines you will eventually come to a stop. Stop relative to what? Everything in space is moving, some things faster than others but still moving. Most hated command on Star Trek "Full Stop" like you are on an ocean on earth.
20) Message boards : SETI@home Science : Planet Hunters Report Record-Breaking Discovery, Search for other habitable planets (Message 1927022)
Posted 29 Mar 2018 by Profile Bob DeWoody
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My calculations show that light will travel 23,498,356,608,000 miles in 4 years based on a speed of 186,282 mps. So at 50,0000 mph it would take an object 53,649.216 years to travel that distance.


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