The fossilized remains of a large 10m long ichthyosaur, a sea predator, has been found in the mud of a dried out region of a reservoir in England. Here is an artist’s reconstruction of what it might have looked like.
As the Omicron surge continues, David Leonhardt and Ashley Wu have analyzed the data on Covid-19 cases in Seattle and New York, two cities that have the most timely data. They have produced six charts that pretty much tell the whole story about how the pandemic is affecting the vaccinated versus the unvaccinated.
As the Omicron variant keeps surging, we hear of yet another needless death.
A leading QAnon promoter who urged both her followers and strangers she passed on the street not to take the COVID vaccine died Thursday of the coronavirus, making her just the latest vaccine opponent killed by the disease.
Cirsten Weldon had amassed tens of thousands of followers across right-wing social media networks by promoting the pro-Trump QAnon conspiracy under the screenname “CirstenW.” She was prominent enough to become a sort of QAnon interpreter for comedian conspiracy theorist Roseanne Barr and started recording videos about QAnon with her.
Weldon focused on attacking vaccines and other efforts to fight COVID-19, saying in one video that Dr. Anthony Fauci “needs to be hung from a rope.” She claimed the vaccine killed people and even recorded herself yelling at people standing in line to receive vaccines.
[Read more…]
Thanks to Rob Grigjanis, I got the link to the talk I gave on Saturday on the wildly varying age of the Earth. The full day’s talks are below and mine begins soon after the 5:25:00 mark.
If you do not know how to skip to the part where my talk begins, you can go here where it has already been cued up for you.
Rob and I had a discussion about my discussion of Kelvin’s role in the comments section of my earlier post announcing the talk that those interested can go and read.
(Previous posts in this series: Part 1, Part 2, Part 3, Part 4, Part 5, Part 6, Part 7, Part 8, Part 9, Part 10)
For convenience, let me summarize the results that were arrived at in the previous post of the calculations of the Poynting vector by Rohrlich for a charge Q and detector D for the following five scenarios. S represents an inertial frame (such as freely falling in a uniform gravitational field) while E is the frame of the Earth.
Scenario 1: Both Q and D are floating freely in empty space in the absence of all forces
Conclusion: D will not detect any radiation and and thus Q is said to not radiate.
Scenario 2: Both Q and D are both falling freely in a uniform gravitational field
Conclusion: D will not detect any radiation and and thus Q is said to not radiate.
Scenario 3: Q is freely falling while D is on the floor in E
Conclusion: D will detect radiation and thus Q is said to radiate.
Scenario 4: Q is on the floor in E while D is freely falling
Conclusion: D will detect radiation and thus Q is said to radiate.
Scenario 5: Both Q and D are at rest on the floor in E
Conclusion: D will not detect radiation and thus Q is said to not radiate.
Let us see how Rohrlich’s results affect the two postulates that began this series of posts:
Postulate #1: If we can eliminate all other forces such as friction, all objects that are dropped from the same height in a gravitational field will fall at the same rate and hit the ground at the same time.
Postulate #2: An accelerating charge falling freely in a gravitational field will radiate energy.
The results of Scenario 3 support Postulate #2, that the falling electric charge will radiate and that radiation will be detected by a detector at rest in the frame.
But there are still three (at least) unresolved issues.
[Read more…]
More is emerging about tennis player Novak Djokovic’s crackpot views.
The tennis star has a track record when it comes to questionable scientific claims.
In his book Serve to Win, Djokovic described how in 2010 he met with a nutritionist who asked him to hold a piece of bread in his left hand while he pressed down on his right arm. Djokovic claims he was much weaker while holding the bread, and cited this as evidence of gluten intolerance.
And during an Instagram live, he claimed that positive thought could “cleanse” polluted water, adding that “scientists have proven that molecules in water react to our emotions.”
According to Dr David Nunan, a senior researcher at the Centre for Evidence Based Medicine at the University of Oxford, “on the balance of probabilities it is highly unlikely that such claims are true – at least not by current conventions of scientific theory and practice.”
The last delicate operation in the unfurling of the James Webb Space Telescope was successfully carried out when the two side mirrors were unfolded so that the large 6.5m concave mirror is now complete. This was the last final phase of the telescope assembly, as shown in this simulation.
A few days ago, the secondary mirror (the little mirror that faces the big golden mirror) was unfolded and the support structure for it was successfully locked into place.
[Read more…]
People in the US complain a lot about about the restrictions imposed by the pandemic but they should see what Hong Kong has. This report is from a ProPublica reporter who is a Hong Kong citizen about what she had to go through in order to enter the country, starting with a very restrictive 21-day quarantine in a hotel at her own expense, even though she was vaccinated.
Incoming travelers were greeted by gowned, gloved and masked workers, who directed us through the terminal. As I followed the passengers ahead of me, I was unnerved by the shuttered stores….The terminal was now eerily still. My feet made too much noise as I trudged along the path marked by guardrails.
…A PPE-covered worker sent me to a series of stations. First, I pulled my mask down for a nurse to swab my nose and throat for a PCR test. Then I presented my documents — preflight negative COVID-19 test, proof of hotel booking, Hong Kong resident ID and vaccination card — to an officer who scrutinized them before declaring me up to par.
[Read more…]
On Monday, the US recorded over a million new covid-19 cases, a new record, largely driven by the Omicron variant, and we may have not yet reached the peak, which is expected to be reached around mid-January. That statistic is a bit misleading since it includes corrections for delays in reporting over the holidays. In general, I do not pay attention to the daily numbers but instead focus on the averages taken over seven days. But that too has reached a record level of around 575,000, easily surpassing the previous high of around 250,000 set back on January 11, 2021.
Given this grim news, it may be hard to find a silver lining but there is one in that the death and hospitalization rates have not kept pace with the rise in case rates, even allowing for the usual two-week lag. The seven-day average of the death rate is currently around 1,200, compared to its previous peak of 3,400 a year ago. That may be an indication that Omicron is the first phase of the virus transitioning to an endemic, flu-like virus of the kind that we are accustomed to. Some indications of this are that the earlier symptoms of Covid-19, such as loss of a sense of smell and taste and low blood oxygen levels, are no longer as common with the new variant. It also appears that Omicron affects the upper respiratory tract more and is less like to affect the lungs.
[Read more…]
The annual Monterey Skepticamp is being held on Saturday, January 8th from 9:46am to 5:46pm California time. I will be giving a talk at 2:30pm.
Title: Why the age of the Earth has oscillated wildly over time
Summary: The age of the Earth seems to be a settled question in the scientific community, But estimates of its age have oscillated wildly in the past, starting with it being considered really old (even infinitely old) to becoming very young (of the order of thousands of years) to becoming sort of old (hundreds of millions of years) to younger again (tens of millions of years) to the current view of it being really old (of the order of billions of years). This talk will look at the interplay of scientific and religious thinking that was driving this fluctuation.
You can see the full schedule of speakers here.
It is free. You can RSVP here.
The Zoom link to join is https://us02web.zoom.us/j/88526995782
