# OldChemE

Senior Members

323

2

1. ## Should Religion be banned

As opposed to electing a rich career politician such as a Clinton POTUS??
2. ## Italy makes 12 vaccinations compulsory for children

If you don't like vaccination for childhood diseases, the least you can do is "old world" vaccination. I come from a family of four boys. Every time one of us came down with the standard childhood disease, my mom would fix a really nice breakfast for the sick one, and when he was finished she would feed the other three using the same spoon she used for the sick one (unwashed, of course). There was risk, yes, but at least she knew we were all sick and kept a close eye on us, and took us to the doctor if necessary.
3. ## Solve Physics problem

A good approach. In my physics classes I required my students to use a 5 step process in order to gain full credit for a solution. They had to read the problem and then: 1. Identify the 'Givens' by symbol, numerical value and units 2. Identify the Unknown (the thing to be found), by symbol and units 3. Select an appropriate formula linking the unknown to appropriate givens 4. Perform all unit conversions as necessary 5. Solve, showing the math and presenting the results by symbol, value, and unit
4. ## New Keyboard layout

Qwerty is fine-- it had a purpose. Alphabetical order has no purpose. It's an arbitrary arrangement of faint historical value that has no correlation to the best typing arrangement. I'm not sure qwerty has a lot of correlation to what's best either, but I've learned qwerty and I'm too old to easily change. What I would love to see is for the "CTRL" key to be moved somewhere where it is not so easily reached. I am a fast, but not accurate, touch typist. On many occasions I have accidentally hit the ctrl key when reaching for the shift key, and then the keystrokes that came after the accidental ctrl key have erased whole documents before I even realized that the letter keys I struck after reaching for the shift key (due to my typing speed) were being interpreted by the computer as function commands instead of letters.
5. ## Do plants like music?

I can't speak to the topic of music, but down the street from my house years ago there was an old lady with a very nice garden. She had a sign in front of her plants that said "Grow DAMMIT!"
6. ## Had a few questions regarding MS in Nuclear Engineering

I did my BS in Chemical Engineering, and then a MS In Nuclear Science. By choice, I never got into research type work. However, my experience was that the multi-discipline background you acquire by doing a MS in a different subject from the BS led to many more opportunities for interesting work. There seems to be a great demand in STEM for people with the synergistic ability-- the ability to pull together the pieces using knowledge from diverse fields of study. The funny part is that I enjoyed my career immensely, but never did actually carry a job title of Chemical Engineer or Nuclear Engineer. It depends on what really interests you, but I don't think you can go wrong by staying on the path you are taking.
7. ## Job market of the future

Maybe there won't be a "job Market" Looking at history, "Jobs", as in "go to work" are, for much of the population, a relatively new thing in society. Look at what a large percentage of the US population in the 1800's simply provided for themselves but did not "go to work" anywhere. May be we're headed for a future where what people do is what they choose to do but don't work for someone else as such. I have a relative who technically has a job in that he has a license to sell used cars, and has a auto paint shop on his property,but what he really does is trade his work for other's work, "flip" cars (as in buy, fix, and sell for more), buy and rent out property, and anything else he feels like doing when he gets up in the morning-- and he's providing for his family just fine.

9. ## Are there, or are there not, sentient animals.

To the intent of your question, Yes, I agree with Dolphins as fitting your criteria. However, your choice of word is wrong. The word Sentient derives from the Latin word for "feel" and is already defined in many dictionaries-- your definition is not the correct one. Sentient beings are those that feel things (subjective reaction to their environment)-- which is different from the ability to reason-- which is what I think you are getting at. Most living animals are Sentient. sen·tient ˈsen(t)SH(ē)ənt/ adjective adjective: sentient able to perceive or feel things
10. ## New political party

You can start a party-- but the real problem is gaining majority. This is a huge issue in the USA. In countries where the elected representatives form a government, multiple parties can work, because several parties, each having a minority of the total, can form a coalition to select the leader (such as a Prime Minister). In a system like the US where the President is directly elected separate from the Senators and Representatives, it takes some form of majority (electoral or popular, or both) for party to get someone in office to push their platform and not veto legislation.
11. ## Yellow solid on copper sulphate crystals

Since you used tap water, there are many, many possibilities. But, my first guess is that something in there reduced the sulfate ions, and you now have traces of pure sulfur-- which is yellow.
12. ## Turning Steam Back Into Water

That's a tall order. First problem is that the heat of vaporization/condensation of water is very large-- which is why it is so useful in steam turbines. So-- you need to spray it on something that can take away a lot of heat. I suggest anything that conducts heat really well-- which pretty much means metal of some kind. It would also help to have lots of surface area to promote heat transfer. I'm giving you theory instead of actual details because, in all honesty, I can't think of anything that would work really well in Texas heat.
13. ## Why do shorter people have lower DNA damage and live longer?

The interesting part to me is that in reading the links posted by Swansont the two medical articles kept mixing the topic of height with the topic of diet. In other words, they repeatedly mentioned dietary differences that they implied were responsible to some degree for height differences. So, is it height that is the factor or is it the means by which the height is achieved??
14. ## Amateur question about classical physics - escape velocity

Perhaps a different way of looking at it will help you (a little College Physics) Imagine you launch an object vertically with some starting velocity (tossing a ball in the air). Eventually, it reaches its maximum height and the velocity goes to zero, but the ball now has potential energy due to its height. We find escape velocity by doing this calculation assuming the height we reach is infinity. At infinity, potential energy goes to zero (no longer attracted to the earth), and kinetic energy goes to zero (zero velocity). The equation is 1/2 mv^2 - GMm/R = 0, where m is the mass of the object, M is the mass of the earth, R is the radius of the earth, G is the gravitational constant and v is the starting velocity (escape velocity). You Solve this equation for the value of v and that is the escape velocity. This is conservation of energy and the angle of travel has nothing to do with it.
15. ## What is the difference between killing an animal for fun and killing one for food?

I think there is another way to look at this. I learned long ago not to fear a major surgery when I realized that I would go to sleep (loss of awareness), and if I died on the table I would not know it had happened. Let's apply the same logic here. If an animal is not capable of the human level of thought, and is not aware that it is about to be killed, and its existence is terminated in a way that the animal does have the opportunity to experience pain or loss, is there any moral reason not to use it for food?? I don't think so.
16. ## Why is Chlorine not hybridised in BCL3 using hybridisation concept in VB Theory

In my earlier comment about electronegativity of Chlorine-- I was postulating that since Chlorine is more electronegative than Boron, it holds the electrons shared with Boron more tightly than Boron can. In hybridization, the orbitals of an atom shift to accomodate the bond-- so I'm wondering if the energy efficient approach is for the atom that holds the electrons less tightly to hybridize. You would have to dig into this more to check ti, as I am not an expert on hybridization.
17. ## Sodium and urination.

I think DrmDoc is on target with this. Our kidneys serve to filter from the blood any materials that are not needed or at higher than appropriate concentrations, and water flow is necessary to flush out those things that are filtered-- meaning more trips. The reactions to Salt and Coffee are just two examples. Bottled water introduces fewer unwanted things. So, unless you drink too much bottled water, forcing your kidneys to reduce the water content of the blood, you can reduce the trip frequency some.
18. ## Help with English: Freelancer vs. ________?

The crux of it is as Fiveworlds says. In the US, at least, there are many laws in force concerning what things a company must and must not do involving their employees, which are not applicable to someone who is freelance or a contractor. Its a matter of legal obligations (Social security, tax withholding, etc, etc). Thus, there is a difference in legal status between the two.

20. ## Negative mass ??

Yes, there is a difference between speculation and hypothesis. In the Scientific Method, a Hypothesis is formed after first collecting observations. The purpose of the hypothesis is to explain the cause of the existing observations in a manner that permits a prediction that can then be verified by further experimentation. This is more rigorous than speculation. If there are actual observations of events that might imply negative mass, then it would be appropriate to attempt to develop a hypothesis that would predict the conditions necessary to achieve negative mass, and then one would construct experiments to verify this prediction. A speculation need not form the basis for an experiment, while a hypothesis is not proper unless it is sufficiently structured to permit an attempt at verification. However, a speculation based on actual observations might be a good starting point for more detailed work to form a hypothesis.
21. ## U.S. Healthcare

The solution I'd like to see is driven by the situation wherein those who make the laws and enforce them also tend to exempt themselves, which I believe lessens their incentive to get it right. My suggestion (not original to me) is that the US constitution be amended to require that all systems (retirement, health, etc) developed by the Government are mandatory for all government and elected officials, not just the rest of the population. If Congress had to depend on Social Security and Medicare for health (not Tricare or other plans) they would have more incentive to do their best.
22. ## Alternative Facts, Broken Promises & Wolves

While I see some good points in the above posts, I have to note that under Obama my medical insurance costs went up with no change in coverage, Our economy went in the tank (median household income peaked in 2008 in the US and has not recovered), a close friend DIED of prostate cancer after the "Improved" medical care system said he should not have his cancer removed surgically because he was too old, and it wouldn't kill him, and many more upsets. Anybody who promises to stop the Federal Government from meddling in my life has my vote.
23. ## Sinking of the Titanic

I don't know what exact type of steel was used in the titanic, but it is worth noting that below a certain temperature, certain steels experience a situation where the yield strength rises above the ultimate strength. The required temperature is warmer than typical winter ocean temperatures. When this happens, and a stress is put on the steel (such as due to an iceberg), the steel fractures instead of bending. This was the cause of some of the Liberty ship hull failures in WWII. The point is that steel hulls can fail even without being weakened in advance.
24. ## Chromosome numbers and mitosis HELP!

Maybe the books are mixing something (a typo??) or you are misunderstanding. There are two types of cell division: Mitosis and Meiosis. Mitosis is the normal cell division (NOT sex cells). In Mitosis the parent cell duplicates its chromosomes first, then divides once, producing two identical cells having the same 46 chromosomes (called diploid cells). In meiosis (sex cells), the duplication of chromosomes happens once (like Mitosis) but the division process happens twice, producing 4 new cells, but each one only has 23 chromosomes (called haploid cells, or gametes). Thus, in Meiosis, one parent cell produces 4 sex cells. Could that be the 4 you are reading about??
25. ## Injections without needles?

In some form or another they've been around a lot longer than that. When I entered the US Navy in 1969 the doctors used pressure guns that shot a high pressure stream of vaccine. 5 or 6 vaccinations at a time-- we just walked through the room as they shot us in both shoulders. Based on the link I would say that the 1960's version was cruder-- it left a big enough hole that we left the room leaking fluid.
×