Australian Politics Forum - No shirt, no swim rule for Qld schools

deepthought

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Re: No shirt, no swim rule for Qld schools
Reply #15 - Nov 5^th, 2007 at 9:53pm

freediver wrote on Nov 5^th, 2007 at 9:44pm:

Put simply this means kids leave the shelter of school during the worst possible time to be in the sun.

No it doesn't. Not according to your graph anyway.

Yup they do. The school my nephew attends has lunch at 1 o clock and leaves to go home at 3 o clock.

Altering the clock would put him in the school ground at 12 o clock (real time) and on the footpath walking home at 2 o clock. A combined blast of sun that would increase his risk several times. They also play sports in the last period - this would then become 1 o clock or so.

Why do you have so much trouble seeing the truth mate?

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freediver Gold Member Online www.ozpolitic.com Posts: 47366 At my desk.	Re: No shirt, no swim rule for Qld schools Reply #16 - Nov 5^th, 2007 at 9:57pm Obviously if you only pay attention to what happens after midday you can only get one result. but that's only if you look at half the picture. The reality is far less clear cut.
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deepthought Gold Member Offline In Defence Of Liberty Posts: 2869	Re: No shirt, no swim rule for Qld schools Reply #17 - Nov 5^th, 2007 at 9:58pm freediver wrote on Nov 5^th, 2007 at 9:57pm: Obviously if you only pay attention to what happens after midday you can only get one result. but that's only if you look at half the picture. The reality is far less clear cut. Tell me the reality then. So far you appear to be completely blind to it.
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freediver

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Re: No shirt, no swim rule for Qld schools
Reply #18 - Nov 5^th, 2007 at 10:03pm

The difference is that I'm not taking a one-eyed approach to it. I woudn't preume to be able to take a quick glance at a graph and figure out what the end result will be.

Consider this for example. People tend to seek shade when it is hotter, but temperature does not corelate exactly with UV exposure. There is a lengthy delay. This would indicate that mornings are a riskier time for sunburn, increasing the significance of the 9->8 shift.

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deepthought

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Re: No shirt, no swim rule for Qld schools
Reply #19 - Nov 5^th, 2007 at 10:09pm

freediver wrote on Nov 5^th, 2007 at 10:03pm:

The difference is that I'm not taking a one-eyed approach to it. I woudn't preume to be able to take a quick glance at a graph and figure out what the end result will be.

Consider this for example. People tend to seek shade when it is hotter, but temperature does not corelate exactly with UV exposure. There is a lengthy delay. This would indicate that mornings are a riskier time for sunburn, increasing the significance of the 9->8 shift.

Temperature doesn't co-relate at all. It is the position of the sun and the angle of the UV rays through the atmosphere. The higher the sun, the more direct they are, the less scatter of UV rays. It can be cold as blazes but still very risky to be in the sun at midday.

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IQSRLOW

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Re: No shirt, no swim rule for Qld schools
Reply #20 - Nov 5^th, 2007 at 10:53pm

I'm with you Deep- You can jam DLS where the sun don't shine and that is up a politicians a*rse

WA is in the same boat as QLD and at a referendum it was voted down 3 times. Yet because of the p*iss poor performance of the Labor party, they decided to bring in controversial legislation on the basis of a narrow margin at the referendums.

This will bite them big time next election. These b*arstads owe me about 90 days x 1hour @ ~ $80/hr x 3 years = ~ $20000

Stick with a single time frame year round and stock f*ucking with my body clock

DLS sucks balls

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freediver Gold Member Online www.ozpolitic.com Posts: 47366 At my desk.	Re: No shirt, no swim rule for Qld schools Reply #21 - Nov 6^th, 2007 at 11:10am Temperature doesn't co-relate at all. There is a strong local correlation between UV intensity and temperature. There is an even stronger correlation between history of UV intensity and temperature.
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deepthought

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Re: No shirt, no swim rule for Qld schools
Reply #22 - Nov 6^th, 2007 at 3:24pm

freediver wrote on Nov 6^th, 2007 at 11:10am:

Temperature doesn't co-relate at all.

There is a strong local correlation between UV intensity and temperature. There is an even stronger correlation between history of UV intensity and temperature.

Not even close. In fact UV radiation levels can be higher in Antarctica in Spring, where it is still freezing cold, than in California in mid summer when it is steamy.

There is no relationship at all between temperature and UV radiation. It has to do with proximity to the sun and the amount of atmosphere which scatters the rays.

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freediver

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Re: No shirt, no swim rule for Qld schools
Reply #23 - Nov 6^th, 2007 at 3:37pm

There is no relationship at all between temperature and UV radiation.

Completely wrong.

It has to do with proximity to the sun

proximity to the sun?

and the amount of atmosphere which scatters the rays

Both prximity to the sun (if it were a relevant factor) and atmospheric scattering affect both temperature and UV intensity, thus not breaking the correlation.

In fact UV radiation levels can be higher in Antarctica in Spring

Three things. I used the word local. Also, the correlation is stronger when you take history into account, which explains your observation. Finally, a single counterexample does not break a correlation. To suggest that it does indicates unfamiliarity with the meaning of the term.

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deepthought

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Re: No shirt, no swim rule for Qld schools
Reply #24 - Nov 6^th, 2007 at 6:51pm

freediver wrote on Nov 6^th, 2007 at 3:37pm:

There is no relationship at all between temperature and UV radiation.

Completely wrong.

It has to do with proximity to the sun

proximity to the sun?

and the amount of atmosphere which scatters the rays

Both prximity to the sun (if it were a relevant factor) and atmospheric scattering affect both temperature and UV intensity, thus not breaking the correlation.

In fact UV radiation levels can be higher in Antarctica in Spring

Three things. I used the word local. Also, the correlation is stronger when you take history into account, which explains your observation. Finally, a single counterexample does not break a correlation. To suggest that it does indicates unfamiliarity with the meaning of the term.

Yes, proximity to the sun. The earth's orbit around the sun is eccentric - the elliptical rotation changes over time - bringing it, at times, nearer or farther. Further to this it wobbles on its axis. The difference can be quite dramatic and this in combination draws a given point on the earth closer or further away from the sun. The 'proximity' of a particular spot (the playground at the primary school) changes, and this increases or decreases the amount of solar radiation (UV) arriving there.

At the peak of a mountain range one can be blasted by high doses of solar radiation but still freeze to death so I have no idea why you think the presence of UV radiation will make one warm at the same time. You are wrong.

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freediver Gold Member Online www.ozpolitic.com Posts: 47366 At my desk.	Re: No shirt, no swim rule for Qld schools Reply #25 - Nov 7^th, 2007 at 7:20am No I'm not. I said there was a strong correlation. Perhaps you should get out a dictionary.
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deepthought

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Re: No shirt, no swim rule for Qld schools
Reply #26 - Nov 7^th, 2007 at 10:04pm

freediver wrote on Nov 7^th, 2007 at 7:20am:

No I'm not. I said there was a strong correlation. Perhaps you should get out a dictionary.

Possibly I should. While I do perhaps you would be so kind as to explain why it's possible to get irradiated with UV waves while freezing to death, if there is a strong correlation between temperature and the UV index.

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