National Weather Service being undermined again

John Oliver looks at how the Trump administration is trying to limit the services provided by this very important agency because the private sector cannot compete with it. It is doing so by trying to appoint the head of a private weather company AccuWeather to head the NWS. So much for the claims that the private sector can do things much better than the government can. This comes after the earlier failure in 2005 of another attempt to prohibit the NWS from giving its information away for free.

Jonathan Pie on the Extinction Rebellion protests

The climate activist group Extinction Rebellion has organized protests that shut down central London and elsewhere to highlight the need for urgent action on climate change. Jonathan Pie takes aim at those (including newspapers like the Guardian) that snicker at the supposed hypocrisy of the people involved in the protests and moan about the disruptions caused, while ignoring the biggest issue, that those who have known about the climate change crisis for a long time and could have done something about the problem, refused to do anything. (Language advisory)

The 20 companies that are the main sources of carbon pollution

When it comes to climate change and carbon pollution, we have to always remember that while we as individuals can help in small ways by reducing our carbon footprint, the main sources of the problem are certain industries and we must never let up on shaming them so that they feel pressure to change. The Guardian has published a list of the 20 companies that most contribute to pollution, making up 35% of all energy-related carbon dioxide and methane worldwide

The 2019 Nobel prizes in physics

The awards for 2019 were announced today and half went to P. J. E. (James) Peebles for his theoretical work in physical cosmology and the other half jointly to Michel Mayor and Didier Queloz for the first discovery in 1995 of an exoplanet orbiting a solar-type star. By now more than 4,000 exoplanets have been found.

Directly observing a planet orbiting a star other than the Sun is not easy since stars are distant and planets are ‘dark’ (i.e., not primary sources of light). We directly see stars but not planets. Mayor and Queloz tried to see if they could detect the existence of a planet by the fact that due to gravity, the star and the planet orbit around their common center-of-mass. As the star moves towards us during its orbit, the light is blue-shifted and when it is moving away it is red-shifted and it is this ‘wobble’ that they were looking for. But since stars are so much more massive than planets, this wobble is usually tiny. For it to be significant, the planet’s mass should be large but usually large mass planets have large orbital periods, making the detection of variations in light frequency hard. For example, the largest planet in our Solar System is Jupiter that has an orbital period of almost 12 years.
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The enduring allure of near-death experiences

One of the most common arguments that are presented for the existence of the afterlife are the reported near-death experiences, where people say that they died, entered the afterlife, and then for some reason returned to life again and were able to report what they saw. I can’t count the number of times religious people have told me that such experiences are real and prove that their god and heaven exist.

There seems to be an inexhaustible desire for such stories and are eagerly lapped up by religious believers, even though no real evidence has been produced to substantiate them. This article by Arthur E. Farnsley II describes the case of one person who said he actually died (not merely that he was near death) and returned from the dead, not once but twice. Of course he wrote a book about his experience. The article explores how rationalists might respond to such claims.
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Forced obsolescence

This Pearls Before Swine cartoon struck home for me because, like Rat, I have an iPhone 5. I am not one that needs to have the latest version of anything. If the old one works, I stick with it. In fact, I have never bought a cell phone in my life. The ones I have used have all been hand-me-downs from my spouse or children when they upgrade to new phones.

I am perfectly happy with my old iPhone 5 and would be quite content to continue to use it forever because it seems to be working fine as far as its basic functions of calls and texts and its data storage features. But I am feeling pressure to upgrade. The problem is not the phone itself but that one by one, various apps are upgrading to versions that are no longer supported by the phone. The iOS operating system I have is 10.3.4 which is the latest one that my hardware can support but the updates of various apps require newer versions of iOS and that would require me to get a newer phone just to use those apps.

I am holding out for now even though some things (like depositing checks in my bank account) can no longer be done by phone and I have to do it the old-fashioned way.

Sigh.

The CAPS LOCK key should go

On the computer keyboard, apart from the space bar and shift keys which are both used considerably, the next biggest key is the Caps Lock key which is almost never used, except by those who like to use all capitals all the time. These are probably the same people who immediately get onto the fast lane on the highway and stay there, irrespective of the level of traffic.
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Does Newton’s law of gravity work when gravity is very weak?

This video takes a look at Newton’s law of gravity that is written in the form F=GMm/r2 and points out that although the law is referred to as a ‘universal’ law of gravity, it does not hold for very strong gravitational forces involving very large masses (where the General Theory of Relativity needs to be used). He also points out that the law has not been tested very precisely in cases where the force is very weak, such as with small masses, but that we assume it holds true in that regime.


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