education
esiegel | October 11, 2017“Right is right even if no one is doing it; wrong is wrong even if everyone is doing it.” -Augustine of Hippo
Science isn't the easiest endeavor you can undertake. Sure, the rewards are tremendous: you can wind up understanding any phenomenon in the Universe as well (or better) than any human has ever understood it before. But on your way there, you're going to have to do some of the most difficult work you've ever done. It isn't just mathematical and scientific work, either, but internal work on your own psyche. You'll need to learn how to be wrong.
From the distant Universe, light has…
esiegel | September 14, 2017"The physicist is like someone who’s watching people playing chess and, after watching a few games, he may have worked out what the moves in the game are. But understanding the rules is just a trivial preliminary on the long route from being a novice to being a grand master. So even if we understand all the laws of physics, then exploring their consequences in the everyday world where complex structures can exist is a far more daunting task, and that’s an inexhaustible one I'm sure." -Martin Rees
It’s all too easy to take a look at a prediction that’s about something yet unproven and dismiss…
esiegel | August 29, 2017"I go to the Natural History Museum and look at the cage of stuffed starlings there. But my favourite thing is the big blue whale. The scale of it is unbelievable, and makes you feel how insignificant you are as a human being." -Arthur Darvill
How good is your sense of scale? Humans are notoriously bad at this, and yet understanding the magnitude of an event like Hurricane Harvey is much more difficult (and important) than simply using a slew of superlatives. If someone tells you how large the flood in Houston is, and tells you it's "100,000 times the area of the Capitol Mall in Washington, D…
esiegel | August 29, 2017"Curious that we spend more time congratulating people who have succeeded than encouraging people who have not." -Neil deGrasse Tyson
Last week, millions of people across the United States got to experience the awe and wonder of a total solar eclipse, many for the very first time. But in a puzzling event, astrophysicist and one of the world’s most famous science communicators, Neil deGrasse Tyson, decided to use his fame to put down a great many people who were excited about this rare cosmic event. And sadly, when someone explained to him why they would (correctly) say that eclipses are rare…
esiegel | August 4, 2017“Astronomers are greatly disappointed when, having traveled halfway around the world to see an eclipse, clouds prevent a sight of it; and yet a sense of relief accompanies the disappointment.” –Simon Newcomb
On August 21st, a total solar eclipse will travel coast-to-coast across the United States, bringing darkness during the day to portions of 14 separate states. The last time such an event occurred was 99 years ago, back in 1918. Back then, Einstein’s General Relativity still had not been proven, and this eclipse not only provided that opportunity, but held an opportunity for America to…
esiegel | July 27, 2017"...and the Sun has perished out of heaven, and an evil mist hovers over all." -Homer's Odyssey
The great american eclipse is coming, and you're in luck! This astronomical sight is unlike anything else that occurs on Earth (or any rocky planet in the Solar System), and there are three incredible stories that it teaches us about the world. First, there's the incredible story about the Moon, Earth, and Sun in orbit, teaching us about our solar system, alignments, and even the curvature of the Earth.
An illustration of the Sun-Moon-Earth configuration setting up a total solar eclipse. The Earth…
esiegel | July 25, 2017"Bad times have a scientific value. These are occasions a good learner would not miss." -Ralph Waldo Emerson
The enterprise of science is one of the most misunderstood in all of society. Some view it as its own religion; others view it as a political ideology gussied up in smart-sounding clothes; still others view it as open to interpretation. But science is none of those things, and is rather the full suite of knowledge humanity has accumulated along with our process of discovery, investigation, and ongoing hard work.
Astronaut candidates Tyler N. (Nick) Hague, Andrew R. Morgan and Nicole A…
esiegel | May 25, 2017"First Rate People hire first rate people. Second rate people hire third rate people." -Hermann Weyl
So, here we are, encountering one another on the internet. There’s a really good chance that this is because you have some interest in space, science, astronomy, astrophysics, or some related area. Although I am an astrophysicist with a Ph,D. in theoretical physics, my focus over the past decade or so has been on education and public outreach: science communication.
As we're exploring more and more of the Universe, education and outreach becomes more vital than ever if our society wants to be…
esiegel | April 27, 2017"The experiments that we will do with the LHC [Large Hadron Collider] have been done billions of times by cosmic rays hitting the earth. ... They're being done continuously by cosmic rays hitting our astronomical bodies, like the moon, the sun, like Jupiter and so on and so forth. And the earth's still here, the sun's still here, the moon's still here." -John Ellis
Relativity, or the idea that space and time are not absolute, was one of the most revolutionary and counterintuitive scientific theories to come out of the 20th century. It was also one of the most disputed, with hundreds of…
esiegel | April 26, 2017"You must remember, my dear lady, the most important rule of any successful illusion: First, the people must want to believe in it." -Libba Bray
There are many times throughout history that science -- and scientists -- have gotten it wrong. And there are many topics today that are quite polarized, from the Big Bang and evolution to vaccines, fluoridation, chemtrails and climate change. There are many public debates that play out, sometimes in nasty ways, surrounding all of these topics.
A Nigerian health worker tries to immunise a child during vaccination campaign against polio. The…
kkrisberg | April 12, 2017To get a clearer sense of just how bad our drug overdose problem has gotten, look no further than this year’s County Health Rankings. The annual report found that after years of declining premature deaths, that rate is on the rise and due primarily to overdose deaths. It means we could be seeing the first generation of American kids with shorter life expectancies than their parents.
“We often think of the opioid crisis either as happening in very rural communities or as an urban issue,” Kate Konkle, Action Center Team director for County Health Rankings & Roadmaps, told me. “But this is…
drorzel | March 30, 2017There was a kerfuffle in academic social media a bit earlier this week, kicked off by an anonymous Twitter feed dedicated to complaints about students (which I won't link to, as it's one of those stunt feeds that's mostly an exercise in maximizing clicks by maximizing dickishness). This triggered a bunch of sweeping declarations about the surpassing awfulness of all faculty who have ever thought poorly of a student (which I'm also not going to link, because they were mostly on Twitter and are now even more annoying to find than they were to read). It was a great week for muttered paraphrases…
esiegel | March 30, 2017"I much prefer the sharpest criticism of a single intelligent man to the thoughtless approval of the masses." -Johannes Kepler
There are a lot of myths we have in our society about how the greatest of all scientific advances happened. We think about a lone genius, working outside the constraints of mainstream academia or mainstream thinking, working on something no one else works on. That hasn’t ever really been true, and yet there are actual lessons – valuable ones – to be learned from observing the greatest of all scientists throughout history.
The gravitational behavior of the Earth…
esiegel | March 28, 2017"I drive from Florida to California all the time, and it’s flat to me. I do not go up and down at a 360-degree angle, and all that stuff about gravity, have you looked outside Atlanta lately and seen all these buildings? You mean to tell me that China is under us? China is under us? It’s not. The world is flat." -Shaquille O'Neal
Perhaps the reason so many of us don’t quite believe the Earth is round is because we can’t directly see it for ourselves. At any point we happen to be on the Earth’s surface, when we look around in all directions, it appears to be flat. On his great sea voyage,…
drorzel | March 6, 2017Another month, another collection of physics posts from Forbes:
-- Quantum Loopholes And The Problem Of Free Will: In one of those odd bits of synchronicity, a previous post about whether dark matter and energy might affect atoms in a way that allowed for "free will" was followed shortly by a news release about an experiment looking at quantum entanglement with astronomical sources acting as "random number generators." This pushes the point when local interactions might've generated any correlation between measurements back in time a thousand-plus years, which in turn ties into the question…
esiegel | January 11, 2017"Through basic science literacy, people can understand the policy choices we need to be making. Scientists are not necessarily the greatest communicators, but science and communication is one of the fundamentals we need to address. People are interested." -James Murdoch
Are you scientifically literate? Do you even know what that means? You'll periodically see quizzes designed to assess some measure of science literacy, and they'll usually focus on a slew of general knowledge questions, inevitably decrying what a large fraction of people don't know. But is that a fair assessment of scientific…
esiegel | December 10, 2016“I’m coming back in… and it’s the saddest moment of my life.” -Ed White, at the end of his first spacewalk
A great many of us had dreams of becoming an astronaut when we were younger, and many of us still have that dream today. But turning that dream into reality involves a lot of choices, a lot of hard work, a lot of trade-offs and a lot of luck. Having “the right stuff” is no guarantee that you’ll get there, but if you’re willing to put in the work, there’s plenty you can do to maximize your chances.
Teamwork is essential to future astronauts, as astronaut candidates Tyler N. (Nick) Hague…
esiegel | December 8, 2016"It is worthy of notice that in Table VI the brighter variables have the longer periods. It is also noticeable that those having the longest periods appear to be as regular in their variations as those which pass through their changes in a day or two." -Henrietta Leavitt
The past year has held a slew of victories and defeats, positives and negatives and everything in between for us all. Don’t lament the bad; instead, set yourself up to enter 2017 with something wonderful in hand: an appreciation of the wonder of the natural Universe.
Incredible Stories from Space, and the author with…
esiegel | December 1, 2016"When a scientist says something, his colleagues must ask themselves only whether it is true. When a politician says something, his colleagues must first of all ask, 'Why does he say it?'" -Leo Szilard
There are claims flying around all the time that science is corrupt, politicized, and that the robust scientific conclusions reached about a number of issues are unreliable. Whether it's about vaccines, HIV/AIDS, fluoride, climate change or the genetics of sexuality (or a host of other issues), you will often see the rare scientist who dissents from the mainstream highlighted along with the…
drorzel | November 12, 2016I'm teaching introductory mechanics for the umpteenth time, using the Matter and Interactions curriculum, as we have for a while. This is going to be my last time teaching out of M&I, though, because last year the department decided to switch to a different book. Starting this winter term, we'll be using Halliday, Resnick and Walker.
My physics blogging over at Forbes tends toward the contemplative anyway, for a variety of reasons, but knowing that this is the last time through M&I has had me thinking even more along those lines. Thus, recent posts on really simple physics and what it…