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Messages - pikaia

Pages: [1] 2 3 ... 7
1
Policy and solutions / Re: Electric cars
« on: January 16, 2020, 07:29:29 PM »
Assuming you cannot charge at home or at work and so this is relevant then using zap map and filtering for only fast and rapid chargers I cannot physically see a location where this is true in the Liverpool area.


I am in Croxteth, on the North-East edge of the city, about two miles from the nearest charging point - a place I do not frequent. I am retired so cannot charge at work, and there is no charging where I do my weekly shopping. I could possibly get a charging point installed at home, assuming it is possible, but that is not an ideal solution.

2
Policy and solutions / Re: Electric cars
« on: January 16, 2020, 02:43:28 PM »
The infrastructure is sufficient for todays demand ...
I disagree. I live in a large city (Liverpool) but the nearest charging points are several miles away, and I would have to go out of my way to use them.

3
Arctic sea ice / Re: Arctic Image of the Day
« on: January 11, 2020, 12:17:47 PM »


Polar stratospheric clouds.

http://www.atoptics.co.uk/fza196.htm

4
The rest / Re: Good music
« on: December 14, 2019, 04:35:38 PM »
Mozart's aria 'Come Scoglio' from the opera 'Cosi Fan Tutte', with helpful translation  ;D


5
The rest / Re: Good music
« on: December 12, 2019, 02:37:49 PM »
Mysteries of the Macabre.  :o


6
Policy and solutions / Re: Tesla glory/failure
« on: November 23, 2019, 10:30:47 PM »
A Physics Analysis of Tesla's Shattered Cybertruck Windows.

https://www.wired.com/story/a-physics-analysis-of-teslas-shattered-cybertruck-windows/

7
The rest / Re: Good music
« on: November 21, 2019, 01:14:55 PM »
"The Star-Spangled Banner", transposed to the minor key.  :D


8
Consequences / Re: Places becoming less livable
« on: November 13, 2019, 12:56:42 PM »
"...peaked at 1.87 metres ..."

This is meaningless to me. Measured from where? It would be more meaningful to give the depth of water in St. Mark's Square, for example.

9
The rest / Re: Brexit...
« on: November 03, 2019, 05:53:13 PM »
I am sure that English will remain an official language of the EU. For one thing, Ireland will remain a member. For another, English is the de facto lingua franca of Europe and the rest of the world.

10
Arctic sea ice / Re: The 2019/2020 freezing season
« on: October 29, 2019, 12:17:06 AM »
Surprisingly, the DMI Volume curve shows a rapid slowdown in the growth of ice over the last few days, in contrast to the rapid increase in area and extent. How much can we trust the DMI data?

http://polarportal.dk/fileadmin/polarportal/sea/CICE_curve_thick_LA_EN_20191027.png

11
The metric unit of beauty, the milliHelen, defined as the amount of beauty needed to launch a ship, has been strangely neglected.

For reference, this is approximately 21 milliHelens:-


12
Science / Re: Carbon Cycle
« on: October 25, 2019, 11:52:13 AM »
"In the turbid, frigid waters roaring from the glaciers of Canada’s high Arctic, researchers have made a surprising discovery: for decades, the northern rivers secretly pulled carbon dioxide from the atmosphere at a rate faster than the Amazon rainforest."

ttps://www.theguardian.com/environment/2019/oct/25/scientists-glacial-rivers-absorb-carbon-faster-rainforests

14
The rest / Re: Astronomical news
« on: September 18, 2019, 11:38:49 AM »

15
The rest / Re: Brexit...
« on: September 13, 2019, 10:19:35 AM »
Yellowhammer is an anagram of Orwell Mayhem. :)

16
The rest / Re: Brexit...
« on: September 05, 2019, 09:46:29 AM »

17
Consequences / Re: Hurricane Season 2019
« on: September 03, 2019, 08:06:33 PM »

18
The rest / Re: Brexit...
« on: August 30, 2019, 01:32:06 PM »
BoJo declares his opposition to proroguing parliament.

https://twitter.com/i/status/1166778190200758272

19
The rest / Re: Are you hoping for a global civilisational collapse?
« on: August 27, 2019, 12:04:07 PM »
A very badly worded question! It is really two questions in one - one about hope, one about expectation. You can hope for collapse, or for no collapse, or not care either way. You can expect collapse, expect no collapse, or not know. There are therefore 3x3 = 9 possible options, but we are only given eight. Some options ask about both questions, some ask about only one. There is no option of hoping for collapse but not expecting it to happen.

20
Arctic sea ice / Re: meaningless freezingseason/melting season chatter.
« on: August 19, 2019, 05:24:16 PM »

Are you saying the current level of the sea by Greenland would drop by 100m if the ice were removed?  (Not melted, just removed).

That is the figure that I have seen, presumably from a more precise calculation.

21
Arctic sea ice / Re: meaningless freezingseason/melting season chatter.
« on: August 19, 2019, 04:44:44 PM »


As a back of the envelope calculation, taking the mass of the entire Greenland ice sheet and assuming a best case distance from the centre of mass of about 750km at the Greenland shore, the gravitational attraction comes by at about 11 orders of magnitude less than the gravitational attraction of the earth and about 5 orders of magnitude less than the gravitational pull of the moon.

Your calculations are wrong. The mass of the earth is 6e12 GT, the mass of the Greenland ice is 3e6 GT,  a ratio of only 2 million. Also, the ice is closer than the centre of the Earth by an order of magnitude, so the gravity is only different by a factor of ~20,000.
A slope of 1 in 20,000 over 2000Km amounts to a rise of 100 metres.

23
Arctic sea ice / Re: Arctic Image of the Day
« on: July 14, 2019, 09:49:17 AM »


"For about eight months of the year, the Kolyma River is frozen to depths of several meters. But every June, the river thaws and carries vast amounts of suspended sediment and organic material into the Arctic Ocean. That surge of fresh, soil-ridden waters colors the Kolyma Gulf (Kolymskiy Zaliv) dark brown and black.

This image from the Operational Land Imager on the Landsat 8 satellite shows the “blackwater” stream on June 16, 2019. Note that the East Siberian Sea remains covered with ice."

https://earthobservatory.nasa.gov/images/145272/kolymas-annual-purge

24
Arctic sea ice / Re: Latest PIOMAS update (July 2019)
« on: July 08, 2019, 11:31:57 AM »
The volume anomaly at the end of June is more negative than it has ever been.


25
The rest / Re: Astronomical news
« on: July 07, 2019, 05:01:41 PM »

26
The rest / Re: Brexit...
« on: July 07, 2019, 11:17:47 AM »
Well, Ireland would be used to smuggle contraband into EU. The situation would be the same in US if say New Mexico opened borders with Mexico. Or rather, if Florida didn't do border checks on ships.
But the contraband would first have to be smuggled into the UK, specifically Northern Ireland, so I don't see how life would be any easier for the smugglers!

27
The rest / Re: Brexit...
« on: July 07, 2019, 09:41:05 AM »
I don't understand the Irish border problem. Both the UK and the Republic want an open border, and the other 26 members do not use the border, so why do they care about it?

28
"Mexico hail: Ice 1.5m thick carpets Mexico's Guadalajara"

https://www.bbc.co.uk/news/world-latin-america-48821306

29
Arctic sea ice / Re: 2019 sea ice area and extent data
« on: June 28, 2019, 10:27:55 AM »

- Extent loss on this day 117 k, 34 k less than the average loss on this day of 83 k.


More!

30
The rest / Re: Good music
« on: June 26, 2019, 08:11:05 PM »

32
Consequences / Re: Heatwaves
« on: June 17, 2019, 09:16:48 PM »
Can this be right? 145F in the sun?

I think this is meaningless. The temperature of the thermometer in sunlight might well reach 145F, but who cares? It does not mean that the air or anything else will be that temperature. The thermometer will heat up very quickly when exposed to direct sunlight, so it could be much warmer than the ground or the air.

34
The rest / Re: Brexit...
« on: June 02, 2019, 05:36:45 PM »
In hindsight, it looks like May's decision to hold an election in 2017 was a shrewd move - without it they would be looking at an election only 12 months from now, which would be a disaster for the Tories. As it is, the next election is likely to be in 2022, when the fuss over Brexit will have died down and the Brexit party will no longer be a threat. Perhaps.

35
The rest / Re: Brexit...
« on: June 01, 2019, 02:38:14 PM »
If he can live up to his name, James Cleverly, MP for Braintree, should be the next PM.

36
The rest / Re: Brexit...
« on: May 28, 2019, 01:44:42 PM »
I don't think we will see much progress on Brexit any time soon. The new PM will not be elected until late July, just in time for the summer recess, so nothing much is likely to happen before Parliament resumes in early September, just 8 weeks before the deadline. Then there will be panic as the deadline rapidly approaches, IMO.

37
Consequences / Re: Wildfires
« on: May 17, 2019, 10:42:34 AM »
'Fires near Mexico City have filled the skies with smoke over the metropolitan area, which is home to around 22 million people. Air quality has become hazardous as smoke pollution has far exceeded levels considered to be safe. Officials in Mexico City have declared an environmental emergency, closed schools, and advised people to stay inside.'

https://earthobservatory.nasa.gov/images/145062/wildfire-smoke-shrouds-mexico-city

38
Arctic sea ice / Re: Arctic Image of the Day
« on: May 12, 2019, 10:10:35 AM »


Ash and Lightning above an Icelandic volcano.

https://apod.nasa.gov/apod/astropix.html

39
The rest / Re: Brexit...
« on: April 13, 2019, 10:55:55 AM »
Well, well, wellI I didn't realise that the ECHR was responsible for the abolition of slavery! What would we have done without it!

40
The rest / Re: Brexit...
« on: April 13, 2019, 10:03:08 AM »
When the Soviet Union disintegrated in 1991 the members were free to simply walk away and form their own independent countries, with their own currencies, etc., which they did with little apparent difficulty. However, the members of the EU are tied together with a Gordian knot which nobody can figure out how to untie, which suggests that it was badly designed in the first place. Perhaps it would have been better if countries joined up for a set term, eg 10 years, after which they could either leave or renew their membership?

So, it seems to me that the EU is far too complicated and ambitious, few people actually understand it, and the politicians have screwed it up. If politicians learned to follow the KISS principle then perhaps life would be simpler for everyone and they would not find themselves in this purely artificial mess that they have created for themselves.

The European country with the strongest economy is Switzerland, which has never been in the EU, while Italy, one of the founder members has a weak economy with 10.5% unemployment (and Spain has 14.1%, Greece 18.5%), so it is not obvious to me that there is much to be gained from EU membership.

One good thing about Brexit and the EU is that it led to the humiliating downfall of David Cameron and Margaret Thatcher, and soon Theresa May.

41
The rest / Re: Article links: drop them here!
« on: April 06, 2019, 09:14:51 AM »

42
Consequences / Re: Weird Weather and anecdotal stories about climate change
« on: February 25, 2019, 02:25:53 PM »
Windy weather in Chicago: a door up a tree.


43
The rest / Re: Good music
« on: February 10, 2019, 12:06:23 PM »

45
The rest / Re: The Media: Examples of Good AND Bad Journalism
« on: January 23, 2019, 11:35:36 AM »

46
The forum / Re: Arctic Sea Ice Forum Humor
« on: January 01, 2019, 02:37:01 PM »

47
The forum / Re: Arctic Sea Ice Forum Humor
« on: December 19, 2018, 12:07:17 PM »

48
Science / Re: ICESAT-2
« on: December 18, 2018, 09:52:48 AM »

49
Arctic sea ice / Re: Arctic Image of the Day
« on: December 15, 2018, 11:07:56 AM »

50
Consequences / Re: Hurricane season 2018
« on: December 13, 2018, 08:26:26 AM »

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