The sun's magnetic field is about to flip • Hacker News Board

Re: The sun's magnetic field is about to flip

#101

Post by isthatafact » Fri, Jun 14, 2024, 11:55 PM UTC

lupire wrote: post #39

dotps1 wrote: post #28

Earlier quoted context omitted.

[flagged]

Here you go: https://rationalwiki.org/wiki/Pierre-Marie_Robitaille Astrophysics is not a matter of personal opinion. It requires a lot of detailed knowledge and careful practice. Legitimate authority is relevant.

From the wiki article: "he maintains that satellite measurements of the cosmic microwave background radiation, believed by most astronomers to be an afterglow of the Big Bang, are actually observations of a glow from Earth's oceans."

I am no expert but that wacky idea can be ruled out with concepts in an introductory physics textbook just based on the fact that the cosmic microwave background is a few Kelvin blackbody spectrum whereas the ocean temperature is 273K or higher (which would have a very different "warmer" spectrum).

Re: The sun's magnetic field is about to flip

#102

Post by isthatafact » Sat, Jun 15, 2024, 12:09 AM UTC

precompute wrote: post #99

isthatafact wrote: post #94

Earlier quoted context omitted.

> "Pumping CO2 into the atmosphere would then be the best thing to do to stave off this scenario." which makes for a very convenient distraction/talking point of climate-focused science deniers. I am no expert, but every time I have checked into one of those supposed impending Grand Solar Minimum predictions (that will cause some sort of climate crisis), it has been pure pseudo-science with no legitimate or rational…

Don't shoot the messenger. It's all theory and conjecture until it actually happens, and it has in the past, and it WILL happen again in the future.

It is important not to conflate "I have a hunch that x will happen" with "theoretically motivated predictions".

Also, you are conflating a mild temperature drop that would be expected to be caused by solar minimum with an ice age and a "pole shift".

Re: The sun's magnetic field is about to flip

#103

Post by talldatethrow » Sat, Jun 15, 2024, 12:11 AM UTC

semi wrote: post #87

1oooqooq wrote: post #61

Earlier quoted context omitted.

or we will learn those studies were by the same caliber of people who did the food pyramid etc

The food pyramid is misunderstood 'those scientists' were from Sweden responding to protests over the increasing costs of food due to famine. When looked at from the lens of maximizing calories per dollar, it makes a lot more sense.

Makes sense. In a similar vein, once fast food places started stating calories per item... It actually helped me maximize calories per dollar and eat more calories, which seems opposite of the original goal of helping people limit their calories. Who is going to fast food to keep calories low?

Re: The sun's magnetic field is about to flip

#104

Post by danielovichdk » Sat, Jun 15, 2024, 12:18 AM UTC

isthatafact wrote: post #102

precompute wrote: post #99

Earlier quoted context omitted.

Don't shoot the messenger. It's all theory and conjecture until it actually happens, and it has in the past, and it WILL happen again in the future.

It is important not to conflate "I have a hunch that x will happen" with "theoretically motivated predictions". Also, you are conflating a mild temperature drop that would be expected to be caused by solar minimum with an ice age and a "pole shift".

It's no hunch and the author didn't express it as such.

It's a well established theory

https://en.m.wikipedia.org/wiki/Milankovitch_cycles

Re: The sun's magnetic field is about to flip

#105

Post by Galatians4_16 » Sat, Jun 15, 2024, 12:21 AM UTC

gleenn wrote: post #3

Interestingly this happens every 11 years and also their is a longer cycle called the Hale cycle which is double the length at 22 years. It flips from a mostly dipole where the poles match the orientation of earth to a reverse and much more irregular magenetic orientation. I didn't see anything about how this really affects Earth directly other than what I knew previously about sun spots make Coronal Mass Ejections s…

Mostly affects cloud formation [1]

1. https://home.web.cern.ch/news/news/physics/cloud-discovers-n...

Re: The sun's magnetic field is about to flip

#106

Post by mensetmanusman » Sat, Jun 15, 2024, 12:33 AM UTC

isthatafact wrote: post #92

luxuryballs wrote: post #80

Earlier quoted context omitted.

[flagged]

I am no expert, but I am skeptical because the paper results looks way too perfect to be true. Then instead of doing statistical analysis with things like p-values or probabilities, they make wildly out of scope assertions like this: > "Considering all pandemics with obtained extremum points, we can conclude that sunspot extrema coincide with the pandemics’ first appearance probably because of mutation on virus DNA o…

Would be interesting if resulting bursts of gamma radiation increase the entropy of global DNA causing higher population of new virus candidates.

Re: The sun's magnetic field is about to flip

#107

Post by whoiscroberts » Sat, Jun 15, 2024, 12:35 AM UTC

Galatians4_16 wrote: post #105

gleenn wrote: post #3

Interestingly this happens every 11 years and also their is a longer cycle called the Hale cycle which is double the length at 22 years. It flips from a mostly dipole where the poles match the orientation of earth to a reverse and much more irregular magenetic orientation. I didn't see anything about how this really affects Earth directly other than what I knew previously about sun spots make Coronal Mass Ejections s…

Mostly affects cloud formation [1] 1. https://home.web.cern.ch/news/news/physics/cloud-discovers-n...

Without affecting weather patterns?

Re: The sun's magnetic field is about to flip

#108

Post by mensetmanusman » Sat, Jun 15, 2024, 12:37 AM UTC

andoando wrote: post #26

Its so perplexing to me how the laws of physics replicates simple properties into massive scales.

That makes all of us.

Re: The sun's magnetic field is about to flip

#109

Post by [deleted] » Sat, Jun 15, 2024, 12:50 AM UTC

talldatethrow wrote: post #103

semi wrote: post #87

Earlier quoted context omitted.

The food pyramid is misunderstood 'those scientists' were from Sweden responding to protests over the increasing costs of food due to famine. When looked at from the lens of maximizing calories per dollar, it makes a lot more sense.

Makes sense. In a similar vein, once fast food places started stating calories per item... It actually helped me maximize calories per dollar and eat more calories, which seems opposite of the original goal of helping people limit their calories. Who is going to fast food to keep calories low?

[deleted]

Re: The sun's magnetic field is about to flip

#110

Post by isthatafact » Sat, Jun 15, 2024, 12:56 AM UTC

danielovichdk wrote: post #104

isthatafact wrote: post #102

Earlier quoted context omitted.

It is important not to conflate "I have a hunch that x will happen" with "theoretically motivated predictions". Also, you are conflating a mild temperature drop that would be expected to be caused by solar minimum with an ice age and a "pole shift".

It's no hunch and the author didn't express it as such. It's a well established theory https://en.m.wikipedia.org/wiki/Milankovitch_cycles

Those ~100k year cycles in earth orbit and spin are not related to the present discussion of sunspot cycles and solar activity.

And (while not clear in this case) usually when someone claims that a "pole shift" will happen, they are usually referring to the crackpot claim that the planet will suddenly do something like maybe flip over or wobble violently causing the end of civilization: https://en.wikipedia.org/wiki/Cataclysmic_pole_shift_hypothe...