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On 08/03/2018 12:23, Thomas de Groot wrote:
> On 8-3-2018 10:34, Stephen wrote:
>>>>
>>>
>>> Easy peasy indeed. I imagine the guys calibrating those data sheets:
>>>
>>
>> More likely Pop. The materials used are designed to take the weight
>> and are over rated.
>
> Sad. I would like a bit of drama ;-)
>
Your slightest wish is my command.
https://youtu.be/CjzykTQM-4w?t=78
A similar incident happened on the platform I was on. Unfortunately the
crane driver was not so lucky. He got trapped in the cabin for hours and
lost a foot and part of his lower leg.
>>
>>
>>> I am always surprised that we got to the Moon at all, or Mars for
>>> that matter, where we were able to crash at least once because of
>>> imperial/metrics confusion... ;-)
>>>
>>
>> Big mistake mixing units. I may think in imperial but work in metric
>> when I can.
>>
>
> smart. But then you grew up with imperial of course. I find it difficult
> (not that I need it).
>
It is difficult and took years of repetition before it became second
nature. But after learning things like there are 5280 ft in a mile and
60 mph is 88 ft/s. Not to mention the currency. The metric system is a
walk in the park.
Also we oldies can add up in our head. Unlike the youth of today.
--
Regards
Stephen
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On 08/03/2018 13:26, Stephen wrote:
> Your slightest wish is my command.
>
> https://youtu.be/CjzykTQM-4w?t=78
I just noticed a follow up video.
The cage the guys are in is galled a Billy Pugh and you are supposed to
stand on the outside so you don't get trapped if it goes into the sea. I
used them for my one trip on the Piper. A white knuckle job.
https://www.youtube.com/watch?v=ZD8y7Slx2ow
--
Regards
Stephen
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On 07/03/2018 23:29, Mike Horvath wrote:
> On 3/7/2018 7:21 AM, Stephen wrote:
>> Now, I would be surprised if people in the UK did not know that. I
>> guess I was about 15 or 16 when I was taught it at school.
>> But as a rule of thumb that an inch is about the length of your
>> thumb's distal phalanx. Is good enough for children as they more
>> resemble the size of an adult of bygone years.
>>
>> BTW has anyone heard or seen a ruler where feet are divided into tenths?
>> Giving the impression that there are 10 "X inches" to a foot.
>> I saw one once about 30 years ago.
>>
>>
>
> I have a triangular drafting ruler that is like that.
>
>
Hmm I got a set of drafting scale rulers, somewhere in storage. I must
have a look at them. I think the one I saw was a folding yardstick. My
great uncle gave them to me when I was at school.
--
Regards
Stephen
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> On 7-3-2018 22:44, Stephen wrote:
>> On 07/03/2018 21:00, Alain wrote:
>>>
>>>> BTW has anyone heard or seen a ruler where feet are divided into
>>>> tenths?
>>>> Giving the impression that there are 10 "X inches" to a foot.
>>>> I saw one once about 30 years ago.
>>>>
>>>>
>>>
>>> Not feet into tenth, but with inches divided into 1/5, 1/10, 1/3,
>>> 1/6, 1/9 and 1/12.
>>> I've seen one with foot divided into 1/3 and 1/4.
>>
>> I think it might be industry specific rule.
>> About 30 years ago. My boss, offshore, took some measurements in the
>> toolpusher's office using a rule he found there. After getting
>> whatever it was made. It did not fit. He got a bit of a slagging for
>> it. As you would. ;-)
>> He went back up to check only to find that there was 10 "inches" to
>> the foot.
>> Drillers use some strange terms. The anchor chain tension is measured
>> in Kilo-pound-inches. I had never heard of that measurement before I
>> had to calibrate the load sensors.
>>
>
> Interesting story. "kilo-pound-inches", could that mean 'thousand pounds
> per inch'? the word kilo being used for the thousand's value?
>
Very reasonable assumption. Values in pound per inches would require
uselessly large values with some not very significant trailing zeros.
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On 8-3-2018 14:38, Stephen wrote:
> On 08/03/2018 13:26, Stephen wrote:
>> Your slightest wish is my command.
>>
>> https://youtu.be/CjzykTQM-4w?t=78
>
> I just noticed a follow up video.
> The cage the guys are in is galled a Billy Pugh and you are supposed to
> stand on the outside so you don't get trapped if it goes into the sea. I
> used them for my one trip on the Piper. A white knuckle job.
>
> https://www.youtube.com/watch?v=ZD8y7Slx2ow
>
>
Wow... that is nasty. I guess the operator got a well-earned spanking.
I suppose that with high seas this can happen very easily all by itself...
--
Thomas
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On 8-3-2018 14:26, Stephen wrote:
> On 08/03/2018 12:23, Thomas de Groot wrote:
>> On 8-3-2018 10:34, Stephen wrote:
>
>>>>>
>>>>
>>>> Easy peasy indeed. I imagine the guys calibrating those data sheets:
>>>>
>>>
>>> More likely Pop. The materials used are designed to take the weight
>>> and are over rated.
>>
>> Sad. I would like a bit of drama ;-)
>>
>
> Your slightest wish is my command.
>
> https://youtu.be/CjzykTQM-4w?t=78
>
> A similar incident happened on the platform I was on. Unfortunately the
> crane driver was not so lucky. He got trapped in the cabin for hours and
> lost a foot and part of his lower leg.
Yes... I was joking but I am very aware of the dangers. At the Survey
one day, we got a sampler stuck at the base of a borehole. The tension
on the hoisting cable gradually increased until you saw it vibrate like
a violin string. We rapidly backed away from the site as you can imagine.
>
>>>
>>>
>>>> I am always surprised that we got to the Moon at all, or Mars for
>>>> that matter, where we were able to crash at least once because of
>>>> imperial/metrics confusion... ;-)
>>>>
>>>
>>> Big mistake mixing units. I may think in imperial but work in metric
>>> when I can.
>>>
>>
>> smart. But then you grew up with imperial of course. I find it
>> difficult (not that I need it).
>>
>
> It is difficult and took years of repetition before it became second
> nature. But after learning things like there are 5280 ft in a mile and
> 60 mph is 88 ft/s. Not to mention the currency. The metric system is a
> walk in the park.
Yes indeed. I struggled with the currency... In the bar, it got easier
with the hour. :-]
> Also we oldies can add up in our head. Unlike the youth of today.
>
Yep :-)
--
Thomas
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On 3/6/2018 9:48 PM, Alain wrote:
>> Quick question:
>>
>> How do I convert the units of ExposureFactor to my scene?
>>
>> In my scene, 20 units = 1 foot.
>>
>> Thanks!!
>>
>>
>> Mike
>>
>
> The formula use meter, a meter = about 39 inches, or 3 feet and 3 inches
> (3.25 feet in 1 m).
> There are 10.5625 square feet in a square meter.
>
I still don't know what the effect on the value of ExposureFactor should be.
// ExposureFactor A conversion factor between the luminance of the
// sky calculated (in cd/m2) to POV values. As the sky
// luminance can be very high (around 10000 cd/m2)
// then an ExposureFactor around 1e-5 will be needed to
// get a correct exposure when looking at the sky
Mike
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Should this macro use srgb in its pigments or rgb?
Mike
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> On 3/6/2018 9:48 PM, Alain wrote:
>>> Quick question:
>>>
>>> How do I convert the units of ExposureFactor to my scene?
>>>
>>> In my scene, 20 units = 1 foot.
>>>
>>> Thanks!!
>>>
>>>
>>> Mike
>>>
>>
>> The formula use meter, a meter = about 39 inches, or 3 feet and 3
>> inches (3.25 feet in 1 m).
>> There are 10.5625 square feet in a square meter.
>>
>
> I still don't know what the effect on the value of ExposureFactor should
> be.
>
>
>
>
> Mike
Just start with 1/100000.
If it's to bright, use a lower value. If it's to dark, use a higher value.
Repeat until you get a pleasing result.
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> Should this macro use srgb in its pigments or rgb?
>
>
> Mike
It looks like it's based on lightsys. That mean that you should use rgb.
Rule of thumb : If the colour is from some colour picker or a paint
application, use srgb. If it's from a formula calculated within the SDL,
use rgb unless the documentation for that code tells you to use srgb.
Alain
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