Here’s a ‘Pi Day’ picture from Twitter. (We write March 14 as 3.14 here in the United States).
From Wikipedia: The number π (/paɪ/) is a mathematical constant. It is defined as the ratio of a circle’s circumference to its diameter, and it also has various equivalent definitions. It appears in many formulas in all areas of mathematics and physics. The earliest known use of the Greek letter π to represent the ratio of a circle’s circumference to its diameter was by Welsh mathematician William Jones in 1706. It is approximately equal to 3.14159. It has been represented by the Greek letter “π” since the mid-18th century, and is spelled out as “pi”. It is also referred to as Archimedes’ constant.
We had 58°F (14°C) at the high here in the city, and sun all day.
The little crocuses with their flowers have popped out of the ground, just a little bit later than they were last year.
And how do they know when to flower? It’s very complicated. Flowering plants have a master gene called APETALA1 (AP1). A combination of sunlight, soil temperature and water, prompts the AP1 gene to generate proteins, which in turn, switch on more than 1,000 other genes that are involved in the flowering process.
Hooray! We get to erase 2020, annus horribilis that it was, and go into 2021.
There are no guarantees that 2021 will be better —but we do have vaccines now, to fight the pandemic with.
The Biden administration will soon start to pick up the pieces from the last four years. At least there was some economic help from the government this year, with more to come (the $600 checks, $300 per week unemployment benefits extended through mid-March).
Galileo started to turn his telescope to the heavens in 1609.
He soon discovered Jupiter’s four biggest moons, and that Saturn had a ‘strange oval surrounding’. Right around that time, there was the Great Conjunction of 1623 – but it is almost certain that Galileo did not see it.
Astronomers and historians have not found the event mentioned anywhere in the records of that time.
Check out this incredible picture posted on Sunday night by J. Rehling on Twitter (@JRehling).
In his Twitter thread notes below, he says that he used a 9.25″ (that means wide) Celestron telescope with a 2350 mm focal length and an ASI 1600 mm monochrome camera, with separate filters for clear, red, green, and blue.
And when is the next super-close pairing of the two planets? March 15, 2080.
Below is the last batch of superheavy element slides that I had made for my collection.
Oganesson, atomic number 118, is the element with the heaviest atoms. Can even heavier elements be made, with atomic numbers 119 and 120?
Here’s what Samanth Subramanian wrote for Bloomberg Businessweek in an article from Sept. 2019: ‘The periodic table was never expected to furl out endlessly. In these extreme reaches of the table, cramming proton after proton into a nucleus renders it more and more precarious. The positive charges repel one another until the nucleus decays near-instantly—before electrons have had a chance to settle into orbit to provide an atomic structure and before the passage of a hundred-trillionth of a second, the time an atom must exist to count as a new element.
Were you to reach element 173, scientists theorize, matters could get even stickier. The eﬀects of Einsteinian relativity would kick in, and electrons would behave in peculiar ways. Those atoms may not even be atoms as we know them—their electron clouds dissolving and the regular periodicity of their properties swerving wildly oﬀ course.
But physics presents diﬃculties long before 173. Even for 119, waiting just oﬀstage, scientists aren’t sure which two elements they might fuse. Oganesson, No. 118, was the product of an especially stable isotope of calcium slamming into californium. But that calcium can’t just be directed toward einsteinium, the next element after californium; a handful of nuclear reactors around the world generate only a milligram or so of einsteinium for research every year.
Seven years ago at GSI, Christoph Düllmann and his team tried a combination of titanium (22 protons) and berkelium (97 protons), without results. In Japan, Haba has been working with vanadium (23 protons) and curium (96 protons). In a $60 million Superheavy Element Factory in Dubna, inaugurated in March, scientists are pelting berkelium with an extra-stable titanium isotope, its nucleus fat with six neutrons more than standard titanium. But at the moment, Düllmann says, 118 “is the end of the story. We now need one more idea. Maybe we’ll get enough einsteinium at some point. But we have no idea what combination of elements is best for 119 and 120. The number of theories is the same as the number of theorists you talk to.’
My current digital picture project is to add slides to my set of pictures for the elements. The pictures I have are scanned from the 1965 book ‘The Elements’, published by TIME-LIFE magazine.
At that time (1965), the elements up to Lawrencium (atomic number 103) were known. By 2002, scientists had created and identified all the ones up to Oganesson (atomic number 118). The periodic table of elements is now ‘full’ (see picture below).
I hope the nuclear physicists are not just playing with their particle accelerators, but are contributing to the quest for the world’s first fusion reactor (that can produce gigawatts of energy). We need to save the planet.
Here are some scans from the 1965 book (Oxygen, Iron, Copper and Radon).
I had text blocks (from the book) for Einsteinium, Fermium, Mendelevium, Nobelium and Lawrencium), but wanted to add in pictures for them.
For the rest up to Organesson, I will have to make brand new up text blocks, as well as pictures.
I walked down to the former Capitol Hill Organized Protest zone by the East Precinct police station today.
All was quiet with not much traffic on the streets – but right then three police patrol vans erupted out of the police station garage, piercing sirens going and headlights flashing. There was an emergency somewhere that they were rushing to.
I walked by the section of Pine Street between 10th Ave & 11the Ave today, called the Capitol Hill ‘Autonomous Zone’ by the protesters. (How long it will remain ‘autonomous’ — occupying the city streets, unchallenged by the Seattle Police Department— is unclear).
Three intersections on Pine street are blocked off, and a little ‘protest village’ of sorts have sprung up all around it. There are tents, stalls that sell water and food, and other trinkets to protesters.
‘Vancouver! Vancouver! This is it!’ – Radio message from David Johnston (30), United States Geological Survey (USGS) volcanologist who was killed by the 1980 eruption of Mount St. Helens in Washington State, May 18, 1980 at 8:32 AM
It’s 40 years on, and Mount St Helens is still an active volcano and under constant surveillance. From the USGS website: The 1980 eruption jump-started interest in the study of explosive eruptions and monitoring efforts to improve warning systems that help mitigate hazards. The eruption underscored the importance of using as many monitoring tools as possible to track unrest and eruption activity.
The last supermoon of 2020 is out tonight, and its color was a rich cheesy yellow, from my vantage point here.
Here is a pair of pictures that I found on Twitter, of the International Space Station transiting against the Sun, and against the Moon.
The scales of the pictures are the same! .. our Sun is gargantuan, of course — its diameter roughly 400 times that of the moon —but it is also 400 times further away from Earth, than the moon.
Gov. Jay Inslee expanded school closures and prohibited large gatherings across all of Washington State on Friday, in an effort to slow the spread of the new coronavirus. Health officials reported at least five new deaths, and more than 560 people have now tested positive.
– Associated Press
Trump finally announced today — some 30 minutes before Wall Street closed for the week— that he declares a National Emergency* over the coronavirus. He shook hands with at least three Fortune 500 executives (a bad example in the time of coronavirus), and proceeded to exchange barbs with the press. ‘Such a nasty question’ he said, without answering, when asked why he disbanded the pandemic response team when he took office.
Panic buying erupted on Wall Street, pushing the Dow Jones Industrial Average and other indexes up almost 10%.
Okaayy .. but there is going to be a recession. How can there not be? The world is grinding to a halt. The three largest cruise ship lines have announced a suspension in cruising for 30 days. Delta Airlines says the drop-off in business is worse than after 9/11. If any number of states is like Washington State or the State of New York, the national economic impact will be significant.
*The Stafford Disaster Relief and Emergency Assistance Act of 1987 is activated. When the Stafford Act is activated to deal with a pandemic, the federal government can begin providing direct emergency medical care to citizens throughout the country. This could include the establishment of temporary hospitals, for example, to ease the nation’s projected shortage of intensive care beds. The government could also use the act to provide food, water, medicine and other supplies to Americans. [Source: USA Today].
Researchers from the University of California Irvine discovered that during landing, toads’ muscles adapt to the varying intensity of impact. As the creatures hop over longer distances, their landing muscles increasingly shorten in anticipation of larger impacts. UC Irvine biologist Emanuel Azizi says that toads are ideal for studying jumping and landing because they’re so good at it, and that studying them provides the basic science on how muscles respond during high-impact behaviors like landing or falling. [Video clip by University of California @uofcalifornia on giphy.com].
P.S. Also: it’s Saturday, so the stock market cannot go down.
It was 50 years ago, to the day, that the first remote login from one terminal to another was done, on what was then called Arpanet. And so the internet was born, say the pundits.
Research papers into the late 70’s referred to these linked terminals as the ‘catenet model’ (concatenated terminals). It was only in the early 80’s with the arrival of the Transmission Control Protocol/ Internet Protocol (TCP/IP) protocol that the term ‘internet’ was settled on.
And it would be until the mid-90’s, before the public-at-large would get drawn into the internet — by the likes of America Online and Microsoft’s Internet Explorer. Amazon (1997*), Netflix (2002), Google (2004), Facebook (2012) and Twitter (2013) would follow.