With this blog I just wanted highlight Jacqui Murray’s reblog of my Science for Babies Post. I would like for you to head over to Ask A Tech Teacher and check out her post. Also thank you very much Jacqui for your kind repost.
Tag: Blogging
Superfluid Liquids are Like Magic
Super fact 60 : Superfluids such as liquid Helium cooled below -455.58 Fahrenheit exhibit some very strange characteristics such as it flows right through many solids, it climbs walls, it has near zero viscosity, it exhibits circulating flows that never stop despite no energy being added. It is a Macroscopic Quantum Phenomenon.
When gases are cooled far enough, they will turn into liquids and eventually typically to solids. For example, Oxygen becomes a liquid when its temperature drops to -297 Fahrenheit, which is -183 Celsius, or 90 degrees Kelvin. Kelvin is 0 at absolute zero, the coldest possible temperature, and in addition it uses Celsius for the scale. So, 90 degrees Kelvin is 90 degrees Celsius above absolute zero or 162 degrees Fahrenheit above absolute zero. When Oxygen becomes a liquid, it turns into a pale blue liquid. Oxygen becomes a solid at 54 Kelvin, or −218.8 Celsius, and −361.8 Fahrenheit (at normal pressure). It becomes sky blue ice.
Helium stays a gas until very extreme temperatures. Helium becomes a liquid at 4.2 kelvin or -269 Celsius, or -452.11 Fahrenheit. If the temperature is reduced further by almost half to 2.17 Kelvin, or -270.98 Celsius, or -455.8 Fahrenheit, then Helium suddenly becomes a superfluid, exhibiting macroscopic quantum phenomena. It is so different from normal liquid Helium that it is called Helium II. Its heat conductivity (speed of heat/cold transfer) suddenly increases by one million, and the temperature will become the same throughout the liquid instantly. Even a big pool of liquid helium would almost instantly get the same temperature throughout, and the atoms will start behaving in unison. Regular bubbles can no longer exist (atom sized electron bubbles can exist though).
The liquid starts behaving in bizarre ways. If you place an open metal container of Helium II in a closed room the Helium II would climb out of the container and escape, and a thin film of Helium II would climb the walls and the ceiling. If the floor was made of metal or glazed tile the Helium II would remain on the floor. If the floor was made of unglazed tile or stone, it would leak right through the floor as if the floor was a sieve. If you get a whirlpool or fountain going it will keep going forever without any energy loss. In addition, it would also exhibit many quantum effects that are out of scope for this post.
I consider this a super fact because this is a strange, surprising and not a well-known phenomenon. It is a quantum effect that you can observe with your own eyes. It is important because the discovery of superfluidity and its twin effect superconductivity are very important for science and might lead to revolutionizing energy transport in the future. It is no doubt that the phenomenon is real (true), and it has been documented by numerous experiments and papers. It is described in thousands of textbooks, and I’ve observed the phenomenon with my own eyes (that is next).
Our Experiment with Superfluid Helium
During my first class in Quantum Physics, we performed experiments with liquid Helium. We started out by cooling helium using liquid nitrogen (colder than -196 Celsius or -321 Fahrenheit). Then using vacuum pumps, we kept cooling the Helium until it became liquid. We continued cooling it and we could see lots of bubbles and boiling as we kept going, and then it boiled extra much, and then very quickly the bubbles vanished, and the content of the entire glass container settled down and then stood perfectly still.
As 2.17 Kelvin was reached the viscosity (flow resistance) was instantly lowered with about one million times, and non-microscopic bubbles could no longer exist. The heat conductivity (the speed with which temperature spreads) increased by one million times. It means that the heat of a drop falling in one end of a swimming pool of Helium II would spread throughout the swimming pool in a second. Except, we only had a glass container in which sameness reigned throughout the liquid.
We continued doing experiments such as watching the Helium II climb walls inside the experimental setup, and of course the famous fountain. Insert a little metallic straw and watch a Helium fountain start to flow, by itself. Without any energy or pressure added, it just kept going by itself because no energy was lost either.
I can add that it was more of a demonstration than an experiment that we actively participated in because playing with extreme temperatures high or low is dangerous. If you’ve read this blog for a while you might remember when I put a Cesium-137 sample (800 times more radioactive than Plutonium-239) in my jeans pocket instead of back into its lead brick container and walked around with it a whole day. Or that time when I replaced a fuse for a 380 volt three phase powered laser with my finger because I was curious what would happen if I put my finger in there, and I was shocked, and it hurt. Students shouldn’t play with dangerous stuff.
Below is a one minute and forty four second YouTube video of a Superfluid / Helium II experiment showing an eternal fountain.
Below is a four minute explanation of a superfluid / Helium II experiment.
I can add that Helium II (super cold helium) is not the only superfluid but the easiest one to achieve.
Other Physics Related Superfacts
- Some Things Cannot be Known
- Radon Represents our Largest Exposure to Ionizing Radiation
- We are Star Dust
- The Speed of Light In Vacuum Is a Universal Constant
- Two events may be simultaneous for some but not for others
- The Strange Worlds of Exoplanets
- The vastness of space and the beginning of infinity
- The Bizarre Reality of Black Holes
- Every Symmetry is Associated with a Conservation Law
- GPS uses relativity for accuracy
- Time Dilation Goes Both Ways
- The Pole-Barn Paradox and Solution
- The Enormous Kuiper belt
- Time is a Fourth Dimension
- Electric Charge is not the only type of Fundamental Charge
To see the other Super Facts click here
Electric Charge is not the only type of Fundamental Charge
Super fact 59 : Most people have heard of electrical charges, positive and negative. However, in nature there are also color charges—red, green, and blue—which are analogous to electric charges. In addition, there are anti-red, anti-green, and anti-blue charges.
Esther’s writing prompt: 10th September : Charge
Click here or here to join in.
As you may know, atoms consist of particles. Electrons surround the nucleus of the atom. The nucleus of the atom is in the middle of the atom and it consists of protons and neutrons. Electrons have a negative charge. Protons have a positive charge. Neutrons do not have an electrical charge. Electrons are so called elementary particles. They are not composed of other particles. Protons and Neutrons, on the other hand, are not elementary particles. They are composite particles consisting of quarks, gluons and quark pairs called mesons.
Quarks have electric charges, just like an electron and a positron, which is why a proton has an electric charge, a positive electric charge. However, in addition quarks have something called color charge. Unlike electric charges, which come in two forms, negative and positive, they come in three forms red, green and blue and in anti-red, anti-green, and anti-blue (well six forms actually). I should say that the color charges, red, green and blue, are not real colors. They are just names. Just electric charges are associated with electric forces; color charges are associated with the nuclear strong force. The strong force is even stronger than the electrical force.
If you take an equal amount of positive and negative electric charges you get something that is electrically neutral. If you take an equal amount of red, green and blue you get what is called white, or neutral. If you take an equal amount of red and anti-red you also get white. Any other mix gives you a net color charge.
I can add that gluons are elementary particles that in many respects are like photons. Light consists of photons. It is because of the photons that we can see. In addition, the photons transport electrical charge. Photons are massless elementary particles with the intrinsic spin of one, and they belong to a group of elementary particles called Bosons. Gluons transport color charge, and they are massless and have an intrinsic spin of one and belong to the same group of elementary particles called Bosons. Unlike photons, they are stuck inside the nucleus and unlike photons they never get to see the light of day. The pun was intended.
Matter, light, and electrical charges are all part of our daily life. We can touch matter, see light, and we come across electrical charge when we touch something that is charged or when we see lightning. However, we do not come across quarks, gluons, and color charges in our daily life because they are hidden at the center of the atoms. Yet they are fundamental to the existence of matter, of us. We know color charges exist, the existence of color charges is an important fact, and yet it is not a well-known fact and often a big surprise to people. Therefore, I think it is a super fact.
The 118 Elements and the 3,500 Isotopes
There are 118 known elements. Why not 500, or just 4 or 5, like the ancient Greeks believed? Each element is defined by it having a certain number of protons and the same number of electrons if it is to be electrically neutral. The problem with having more than one proton in the nucleus is that protons all carry a positive charge and therefore want to push each other away. Same charges repel and different charges attract. What saves the nucleus from blowing apart are the neutrons and the associated strong nuclear force (protons & neutrons) which is guided by the color charges. The quantum model for electricity is called Quantum electrodynamics or QED. The quantum model for color charges is called Quantum chromodynamics or QCD.
As you add more protons it becomes increasingly more difficult for the nuclear forces (strong and weak) to hold the nucleus together. The positive charge of the protons is pushing too hard. That’s why there are only 118 Elements. Another thing to note is that the number of neutrons does not have to be the same as the number of protons. This means that for each element there are several kinds of so-called isotopes. For example, carbon has six protons and six electrons (if the atom is electrically neutral) but the carbon atom / element can have six neutrons, seven neutrons, or eight neutrons. You call them carbon-12, carbon-13, and carbon-14, where the number represents the number of protons plus the number of neutrons.
It is the electrons that determine the chemical properties of an element, and therefore isotopes with a different amount of neutrons are chemically identical. However, they are different with respect to properties that relate to he nucleus, such as radioactivity/stability, and of course weight. Also, when atoms combine into molecules their chemical properties change drastically, but again that is due to the rearrangement of the electrons. There are around 3,500 known isotopes, most of them radioactive.
What is a Quark?
To learn more about Protons, Neutrons, Quarks, Gluons, Color Charges, and Quantum Chromodynamics you can watch this 10 minute video below.
Other Physics Related Superfacts
- Some Things Cannot be Known
- Radon Represents our Largest Exposure to Ionizing Radiation
- We are Star Dust
- The Speed of Light In Vacuum Is a Universal Constant
- Two events may be simultaneous for some but not for others
- The Strange Worlds of Exoplanets
- The vastness of space and the beginning of infinity
- The Bizarre Reality of Black Holes
- Every Symmetry is Associated with a Conservation Law
- GPS uses relativity for accuracy
- Time Dilation Goes Both Ways
- The Pole-Barn Paradox and Solution
- The Enormous Kuiper belt
- Time is a Fourth Dimension
To see the other Super Facts click here
Science Books for Babies
I think that one of the most interesting series science books for beginners that I’ve come across is the Baby University series. I bought it for our soon to be born first grandchild Jack, but I couldn’t help but go through them myself. It is a great series for those who hope to put their one-year-old toddlers in a PhD program. But seriously, these books explain science concepts as simply as it is possible to do. The books may still be a little bit tough for babies, but I think 2–3-year-olds might get something out of them. The point of the books is not to make young children understand complex scientific concepts but to introduce the vocabulary and build curiosity.
Below I am presenting five books in the series, General Relativity for Babies, Electromagnetism for Babies, Artificial Intelligence for Babies, Quantum Physics for Babies, and Organic Chemistry for Babies. I am providing my review for the book and a link to my review as well as the book and a photo of the front cover.
General Relativity for Babies
This is the Amazon link for General Relativity for Babies.
My Review for General Relativity for Babies
General Relativity as Simplified as Possible
We bought this board book for our not yet born grandson. This book simplifies the General Theory of Relativity as far as you possibly can. It uses simple language and colorful illustrations to give the reader an idea of what is going on. Different sized masses are different sized balls, space-time curvature is illustrated using a distorted grid, and objects orbiting larger masses, such as a star, are shown as small balls having their paths curved by a warped grid. There are simple explanations for what a black hole is and what gravity waves are.
A baby would not understand this book but maybe someone who is 3-4 years old would. But your expectations need to be realistic. It should also be noted that even if you understand the book, the explanations are too simplistic for you to really understand General Relativity, but the explanations are not so simple that they are wrong. The book will just give you an idea of what is going on. However, I was impressed by the fact that the author and illustrator were able to present such an abstract theory in a way that makes it possible for a child to at least have a clue. I think that the most important aspect of the book is not whether the child understands General Relativity but the interest in science that it may evoke.
Electromagnetism for Babies
This is the Amazon link for Electromagnetism for Babies.
My Review for Electromagnetism for Babies
Electromagnetism Simplified for Young Children
We bought this short and colorfully illustrated board book for our not yet born grandson. I don’t think a baby will understand it but maybe when he is 2-3 years old. The book explains in simple terms and with colorful simple illustrations the basic concepts of charges, and attraction between negative and positive charges, and repulsion between two positive balls/charges and two negative balls. It explains about electrical and magnetic fields, and the fact that charges rotate around magnets. I believe this book can spur a child’s interest in science and engineering.
Artificial Intelligence for babies
This is the Amazon link for Artificial Intelligence for babies.
My Review for Artificial Intelligence for babies
Artificial Intelligence for Small Children
We bought this board book for our not yet born grandson. He will not be able to understand it until he is at least one years old, but that is OK. The book explains the difference between a dog, a live thing, and a computer. It does this in very simple terms that I believe a young child could understand. According to the book, a computer can do some things that are impressive, such as complex calculations, and you can teach it certain skills, but it is not adaptable like a dog. I think that is about what you can make a very young child understand. Naturally, there are no neural networks or AI algorithms in the book. However, I think it sells artificial intelligence short, since artificial intelligence is becoming increasingly adaptable.
Quantum Physics for babies
This is the Amazon link for Quantum Physics for babies.
My Review for Quantum Physics for babies
Quantum Physics for Young Children and Adults who Detested Physics Class
We bought this board book for our not yet born grandson. We may need to wait until he is 2-3 years old before it makes sense to read it to him. In the meantime, it is also a good book for adults without a solid science education. The book talks about colorful balls with energy and presents a simplified version of the Bohr model of the atom. There are blue balls called electrons and red balls called protons in the middle (the nucleus). The electrons travel in circular orbits around the middle. Light can change the energy of electrons causing them to jump between the orbits.
My daughter made the comment that a baby is only going to understand that an electron is a blue ball and a proton is a red ball, which isn’t a correct description of electrons and protons. Protons and electrons don’t have specific colors, not to mention that a simplified Bohr model for the atom is quite different from the more realistic Schrödinger’s model of the atom with quantum waves and probabilistic electron clouds. However, I am still very impressed by how simple the author and the illustrator succeeded in making this abstract topic. It is a good start for budding physicists.
Organic Chemistry for babies
This is the Amazon link for Organic Chemistry for babies.
My Review for Organic Chemistry for babies
Your First Book on Organic Chemistry
We bought this board book for our not yet born grandson. We will read it to him when he is 1-3 years old. Right now, we can read it. This book simplifies Organic as far as you possibly can. It uses simple language and colorful illustrations to give the reader an idea of what organic chemistry is. Basically, atoms are balls of different kinds. Atoms make up everything. Atoms can stick to each other, and they can make different shapes. The balls we call carbon (in black) can stick to small white balls called hydrogen and other balls called oxygen. We call those organic molecules, and they make up plants, food, and medicines. I think this is simple enough for a 1–3-year-old to understand, but not a baby. In my opinion, a better name for this series would have been “for Big Boys or Girls” rather than babies, because young children don’t like being called babies.
To watch a woman read Quantum Physics for Babies. Click on the YouTube video below.
To see the Super Facts click here
The US Drug Overdose Epidemic is Extreme
Super fact 51 : In 1968 5,033 Americans died from a drug overdose. In 1978 5,506 Americans died from a drug overdose. In 1999 16,801 Americans died from a drug overdose. In 2022 107,941 Americans died from a drug overdose. 82,000 of those deaths involved opioids (about 76%). The number of people who died from an opioid overdose in 2022 was 10 times the number in 1999. More than half of all opioid deaths in the world were Americans despite being only 4.2% of the world population. The hardest hit demographic is white males.
Note the data in the super fact above is taken from Wikipedia, which in turn took it from CDC. However, the data across multiple sources look roughly the same (CDC / CDC, NIDA/NIH, Our world in Data, Wikipedia). I think this is a super fact. I should add that the statistics seem to have improved a little bit in 2023 and 2024.
I’ve posted about good super facts in this blog several times:
- Poverty and child mortality has been sharply reduced worldwide.
- US violent crime nearly cut in half since 1990.
- We are living in relatively peaceful times.
- Wind power is providing more than a quarter of Texas Power.
- Wind power is not a major cause of bird death.
- EV Cars Indeed Emit Less Carbon Pollution.
- Natural Disasters Kill Less People Now Than 100 Years Ago.
- Emissions of ozone-depleting gases have fallen by 99 Percent.
- Developed nations have successfully reduced carbon emissions.
- Sulfur dioxide pollution has fallen by 95 percent in the US.
- Deforestation peaked back in the 1980s.
- There are many environmental success stories.
However, unfortunately there are also bad super facts, like this one.
The Severe Drug Overdose Epidemic in the US is a Super Fact
We recently went to the funeral for the young son (in his 20’s) of good friends of ours. He died from a drug overdose. The same thing happened to another friend of ours not too long ago. Despite all the talk about drugs, the war of drugs, and the “just say no campaign”, in the 1980’s I don’t remember this happening to people I knew when I was young, so I looked up the statistics. I knew we had an opioid epidemic with Fentanyl being the greatest culprit followed by Heroin. I just didn’t realize how severe it was and how American it was. This is important and shocking and the sources behind the data are reliable, which is why I consider this a super fact.
The United States Has by Far the Highest Death Rate from Opioids
If you play around with this graph from Our World in Data you will notice that the United States has a very high rate of deaths from drug overdoses, especially opioids, much higher than any other country. For example, take my home country Sweden, where 283 people died from opioid in 2021 (398 all drugs, data from IHME). Compare that with the United States, where 55,452 died from opioid in 2021 (70,893 all drugs, data from IHME). Adjust that for the population in each country you get a rate of 16.3 deaths per 100,000 inhabitants for the US and 2.7 deaths per 100,000 inhabitants for the Sweden. Sweden and the US are both open wealthy democracies in which certain opioids are legal for medical purposes but otherwise illegal. The graph below has slightly different numbers but notice that the year (2024) is different.
Some illustrative Graphics on Drug Deaths
The graphs below illustrate both the sharp rise in drug related deaths, especially opioids, as well as how hard hit the United States is compared to the rest of the world.
Super Facts 