Live Chemical Free Now

I did a quick Google image search for chemical free. Here are some products that advertise themselves as chemical-free.

And if you want somewhere where your children can play free of chemicals, there is this park.

This is all simple fear mongering. Chemicals are BAAAAAAAD. Except the good ones. Here's an image that has popped up on the internet showing all the chemicals that naturally occur in a banana; no evil corporate chemist needed.

I came across a scientific paper entitled A comprehensive overview of chemical-free consumer products available from Nature Chemistry.* The abstract for the paper states

Manufacturers of consumer products, in particular edibles and cosmetics, have broadly employed the term ‘Chemical free’ in marketing campaigns and on product labels. Such characterization is often incorrectly used to imply — and interpreted to mean — that the product in question is healthy, derived from natural sources, or otherwise free from synthetic components. We have examined and subjected to rudimentary analysis an exhaustive number of such products, including but not limited to lotions and cosmetics, herbal supplements, household cleaners, food items, and beverages. Herein are described all those consumer products, to our knowledge, that are appropriately labelled as ‘Chemical free’. 

This paper is incredibly easy to read. No prior knowledge of chemistry is needed. I encourage everyone to download a copy here.**

*In the interest of full disclosure, the paper comes from the blog The Skeptical Chymist published by Nature Chemistry.

**If you don't wish to download the paper, I'll let you in on the joke. It consists off two blank pages.

Entire State of Oklahoma is Quarantined for Ebola Outbreak

An Oklahoma teacher traveled to Rwanda. Some parents want her quarantined for 21 days before she can return to the classroom.

You see Rwanda is in Africa. So is Liberia, Sierre Leone, and Guinea where the outbreak is located. But let’s look at a map.

Rwanda is 2500 miles from Liberia. It’s only 3000 miles across the United States.

I think we should quarantine the state of Oklahoma. Look at this map. Oklahoma city is just 190 miles from Dallas.

Be afraid. Be very, very afraid. You still have zero chance of contracting Ebola. Now cover your mouth when you sneeze and wash your hands. I don’t want a cold this winter.

Political Science

I haven’t been terribly prolific in my blog writing, but I did keep bookmarking items as I came across them. So in an attempt to clean up my bookmark folder, here is a run down of political science.*

Not the academic field of political science. I’m writing about what happens when politicians let their political ideologies override common sense.

So, in no particular order…

Former Massachusetts Senator and New Hampshire Senatorial candidate Scott Brown can’t seem to remember the research on climate change. In 2012 during the Massachusetts race against Elizabeth Warren, Brown “absolutely” knew that climate change was real and anthropogenic (man made). But now in 2014 in the NH contest, he’s sure that there is no climate change.

Instead of citing the scientific journals, Montana Congressional candidate Ryan Zinke referred to the Wall Street Journal when he declared that climate change is not settled science. On another issue, Zinke thinks that fracking is environmentally friendly.

Rep. Joe Barton is in the Hall of Fame of science deniers. In 2007, Barton shows his vast knowledge of climate by pontificating on the effect on temperature by cloud shapes. “Tall clouds or skinny clouds, short clouds, fat clouds, high clouds, low clouds.” Ignoring the nearly unanimous scientific consensus of climatologists, he opposes any legislation on climate, because "You can't regulate God. Not even the Democratic majority in the U.S. Congress can regulate God."

Oklahoma Senator James Inhofe says that climate change is really a harmless act of God.” This came during a debate on unemployment benefits. In a different debate, Inhofe cited a petition that proclaims that greenhouse gases do not cause climate change. Fortunately not everyone elected to the Senate is an idiot. Sen. Sheldon Whitehouse noted that the petition includes future Nobel Prize winners, The Spice Girls.

Did you know that it’s all a complete hoax anyway. Rep. Dana Rohrbacher stated

Just so you know, global warming is a total fraud and it is being designed by—what you’ve got is you’ve got liberals who get elected at the local level want state government to do the work and let them make the decisions. Then, at the state level, they want the federal government to do it. And at the federal government, they want to create global government to control all of our lives. That’s what the game plan is. It’s step by step by step, more and bigger control over our lives by higher levels of government. And global warming is that strategy in spades.… Our freedom to make our choices on transportation and everything else? No, that’s gotta be done by a government official who, by the way, probably comes from Nigeria because he’s a UN government official, not a US government official.

So climate change is a hoax perpetrated by a Nigerian. Rohrbacher also thinks that a dramatic change in climate 55 million year was caused by dinosaur farts. 

The House Committee on Science, Space and Technology is chaired by Rep. Lamar Smith. Smith doesn’t understand a review of the scientific literature. “The IPCC does not perform science itself and doesn't monitor the climate, but only reviews carefully selected scientific literature.”

Then there’s Lenar Whitney, Louisiana state representative and Congressional candidate. She really thinks the Earth is getting colder and that a ten-year-old-child can disprove climate change with a thermometer. When a Washington Post reporter asked her to back up her claims, “she froze and was unable to cite a single scientist, journal or news source to back up her beliefs.

In Kentucky, state Sen. Brandon Smith was able to disprove the nearly unanimous consensus among climatologists. He knows that “the temperature on Mars is exactly as it is here. Nobody would dispute that. Yet there are no coal mines on Mars. There’s no factories on Mars that I’m aware of.”

Finally, there is Rep. Dan Benishek. “Well, I am a scientist. You know, I believe in peer-reviewed science. But, I don’t see any peer-reviewed science that proves there is man-made catastrophic climate change.” Let’s review his credentials. Benishek graduated from the University of Michigan with a B.S. in biology. Okay. UM is a prestigious university. He went to Wayne State University’s medical school, received his M.D. in 1978, and has worked as surgeon. That’s actually pretty impressive. Except there no evidence he has any experience in climatology or any of the related fields.

What do real scientists say on the matter of climate change? A meta-analysis of the literature found that out of 11,944 articles published between 1991 and 2011, only 0.7% rejected anthropogenic global warming. Among the articles expressing a position on the issue, 97% of researchers in the field - not some ransom petition signed by the Spice Girls - are convinced that humans are a driving force in climate change. Of course, if you'd like to read some of the climatology literature for yourself, you should first visit the International Panel on Climate Change (IPCC)

Here’s a quick roll call of other non-scientists who openly ignore the vast research that conclusively shows climate change is happening and is man made.

• Sen. John Boehner
• Gov. Rick Scott
• Sen. Marco Rubio
• Senatorial candidate Joni Ernst
• Gov. Bobby Jindal
• Rep Michael Grimm

And the list will goes on. I wonder what other settled science these morons will dispute.*

*I have so many items bookmarked that I could only deal with climate change here.

Are Dinosaurs a Renewable Energy Source?

Greg Gutfeld is the guy on Fox’s The Five who supposed to provide jokes that are intentionally funny. More often I find him humorous when he’s not trying to be funny.

CREDIT: Fox News

Last week during a discussion on climate change on The Five, he asked, "Isn't fossil fuels the ultimate renewable energy? It's renewed once. It used to be a dinosaur. Now it's fuel. How is that not renewable?"

Notice how the other four completely ignore Greg.

Now forget the fact that dinosaurs are extinct; petroleum doesn’t even come from dinosaurs. Both petroleum and natural gas was formed by the decomposition of phytoplankton and zooplankton   many millions of years ago. Coal on the other hand was formed by the decay of terrestrial plants during the Carboniferous Period 360 million years ago.

Can someone explain to me what is so difficult to understand about petroleum, natural gas, and coal being non-renewable energy sources?

The Impossible Is Still Impossible

I saw this article in Wired referenced on a couple of science pages on FaceBook. 

NASA validates 'impossible' space drive

Let me give you the short version of how this engine is supposed to work. Microwaves are beamed into a cone-shaped cavity. They bounce around the cavity and produce a force on the cavity in a direction perpendicular to the direction they were beamed in. Imagine  turning on the microwave oven and watching it push itself off the kitchen counter.

Why is it impossible? This violates one of the basic laws of physics. 

The Conservation of Momentum

The conservation of momentum isn’t your ordinary law of physics. It is one of the most fundamental principles in science. It is intimately related to spatial symmetry. Roughly speaking, the laws of physics here are the same there. You may know this as Newton’s third law of motion or for every action, there’s an equal but opposite reaction.

To obey the conservation of momentum, propellent is pushed out by the rocket and the rocket is pushed by the propellent. This engine is said to produce thrust without any propellent. 

So I was immediately skeptical. So I dug around a little bit. I found a short description of the experiment. One thing I found interesting is that the authors did not lecture on “”physics of the quantum vacuum plasma thruster.” All right, that’s fine; if the results were groundbreaking, the explanation might come later. Something similar happened in 1986. Researchers at IBM discovered ceramic materials that lost all electrical resistance (superconductivity) at surprisingly high temperatures. There is still no complete explanation for why this happens. What is different about these two cases is that the superconductivity ceramics didn’t violate any basic principles of physics.

What made me laugh however is the authors claim that their device may be “demonstrating an interaction with the quantum vacuum virtual plasma.” I have no idea what they mean by a quantum vacuum virtual plasma. 

I also found their paper. This made me giggle, too. They built two devices: one was designed to work, the other was designed not to work. Both versions produced the same amounts of thrust.

Phil Plait in his Bad Astronomy blog at Slate says this episode is reminiscent of the faster than light neutrinos and the mysterious force slowing down the Pioneer spacecrafts.

It reminded me of an article that caught my attention while I was in grad school. I remember getting all excited about this revolutionary paper published in one of the premier physics journals. The authors had data that showed that a gyroscope rotating in one direction weighed less than if it were rotating in the opposite direction. Finally, an anti-gravity device!

My research advisor wasn’t nearly as excited. His comment was something along the lines of “systematic error.” But still I held out hope.

Then four months later, my anti-gravity hope were dashed. Others trying to replicate the results found there is no anti-gravity.

KCAL 9 And The Supermoon

CREDIT: CBS

I was watching the KCAL 9 news at 10 p.m. They had a report on the super moon. (yawn)

But then Serene Branson said this:

And they say that with the full moon like that, that if you’re feeling a little tired, a little sluggish, that it’s because of the pull. Just like how the moon has an effect on the tides, it has an effect on us, because we’re mostly water. And that’s when the crazies come out.

Despite what Bill O’Reilly thinks, the tides have a well-known cause. The tides are due to the difference in the strength of the gravitational force on opposite sides of the earth. 

There is no measurable effect on the moon’s gravitational field on us. UCLA astronomer George Abell calculated that a mosquito on your arm would exert a greater gravitational force on you than the moon.

As to the supposed lunar lunacy, that too was debunked long ago. 

I thought that maybe KCAL meteorologist Amber Lee might correct her, but no. That got me to thinking about Lee’s credentials. She has a bachelor’s degree in communications and a master’s in journalism. No degree but a certificate in  meteorology through Mississippi State University’s Broadcast Meteorology Program. To earn this certificate, she had to pass an online exam consisting of 100 multiple choice questions. 

Chuck Norris Doesn’t Need Facts

Last week, Chuck Norris in his column at the World Net Daily* claimed that the rise of allergies is linked to the use of vaccines. He even quoted physiologist, Dr. Charles Richet who won the Nobel Prize in Physiology and Medicine for his ground breaking research on allergies (anaphylaxis).

Only problem is that Dr. Richet’s work took place at the turn of the 20th century. He won his Nobel Prize in 1913. 

Does that mean Chuck couldn’t find any scientific research done on allergies or vaccines in the last 101 years?

Or did he conveniently ignore it?

*Sometimes this publication's title is misspelled as the World Nut Daily.

When I Say Something Stupid

Last night during class, I asked the students to imagine explaining something to their mothers. One student immediately asked, “Why mothers? Is there something special about mothers.”

Oops. So I quickly changed my statement. I said imagine explaining this to your parents. She shot back. “Isn’t that ageist.”  I was caught again. I love students with sharp minds.

Some of you readers might think this is about political correctness, but you would be wrong.

My Mother

My mother comment can probably be traced back to some advice I got when I was preparing one of my first presentations as a graduate student. I was told that I should make it understandable to a general audience and that a good rule to follow is to imagine giving it to my mother. 

Why my mother? I don’t know, but physics was mostly men when my advisors were in school, it was was mostly men when I was in school, and it is still mostly men now. That fact probably has much to do with it.

The term for this sort of thing nowadays is mansplaining, and it is hardly unique to physicists. Plus mansplaining, I think, can occur whenever one person regardless of gender assumes that another lacks knowledge of a subject because of some unrelated factor like gender or age.

I’ve said other stupid things in class, like the time I told a class that I was going to give them a softball question. A woman in class asked what that was. Now I don’t know if she truly didn’t know or was politely pointing out that I just said something stupid. 

I played some softball in grad school. There was this informal league of grad students from various departments. There were men and women of all sorts of athletic ability. The pitcher threw slowly and every effort was made to ensure that people hit the ball. Plus lots of beer was drunk. Lots and lots. Some of us would even run the bases with a cup in our hand trying very hard not to spill any.

That’s my idea of softball, so a softball question is just one that’s easy to answer.

But when she asked what a softball question was, the first image that came to mind was women’s softball, and if you’ve ever have seen a softball game, you know that there’s nothing soft about it.

I like the fact that I’m still capable of learning.

To Brian DeFacio

All of the professors in the physics department at the University of Missouri had a substantial impact on who and what I am. Three, however, deserve special mention, because they had an outsized influence on me both as the physicist and teacher that I am.

David Cowan, my research advisor, taught me to see science as one big picture. Henry White demonstrated much confidence and a lot of patience in a graduate student and allowed me to be one of the first two graduate students to teach an undergraduate course.

Brian DeFacio. I could always count on him for a conversation. In my acknowledgment section of my dissertation, I included a joke that that only those who knew Brian will get. 

I thank Dr. Brian DeFacio for innumerable conversations.

These never occurred in his office. Sometimes in the hallway, sometimes before or after class, but usually in the physics department lounge. Breaking news in physics? Brian would be all too happy to discuss it with you. An interesting problem in a course? He wouldn’t necessarily help you with it, but he would put his own special spin on it. 

Sometimes he would relate personal stories. A favorite - Brian was serving in the armed forces, Army I think, and stationed at a Nike missile facility. There was this young lieutenant who didn’t think too highly of Brian and often pulled rank. Brian was on guard duty one night when this officer came by his post. Brian challenged him, and the officer did not respond with the correct counter phrase. He then ordered the officer onto the ground and held him at gun point until others arrived.

What you should take from this story is how he treated people. Brian always treated us grad students as colleagues. He never used his position as anything other than teacher, mentor, and friend.

In the classroom, he was a wonder. No one could fill a blackboard like him. Room 305 held at most eighteen people, and it had boards on three walls. Brian would start at the front on the left, and after half an hour would reach his starting point, and we would then start the next lap. I remember inventing a DeFacio dictionary that I kept in my head. Note taking because much easier. So when I wrote “linear, isotropic, and homogeneous,” I just thought something like “the usual case.”

One day, halfway through the lecture, someone caught a sign error. After correcting it, he told my favorite story of one night while working at home, his wife asked him if something was wrong. Brian said that he was trying to find a missing minus sign. She asked him why don’t you ever try to find a missing plus sign.

Brian also had a way of making you come up to his standards. I was in his Condensed Matter I course. We had two homework assignments and a final exam. I didn’t do every well on the first homework set, but I did all right on the second. I missed one class that semester. He saw me the next day and said I had missed the best lecture he ever gave, one on Anderson localization.

When the final came along, there were two facts of life. Because I did poorly on the first homework, I had to do well, and I had to know Anderson localization. I nailed that test. Perfect answer on Anderson localization. After checking with some classmates, I suspected I had the highest score on the final. So I was a little miffed when Brian gave me a B, but that lasted about 30 seconds, because he was right. I blew off the first assignment; he knew it, and I knew it. He wanted us to do the best we could at all times.

Toward the end of my comprehensive exam, Brian raised his hand to ask a question. Now I was prepared for this exam. I knew my research topic. I could have answered nearly anything the committee could throw at me. So what did he ask? 

Calculate the power output of a fly.

I haven’t seen or spoken to Brian in twenty years. Now there are no more opportunities for discussions, but in a way, that’s okay, because of all those conversations that were too many to count.