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Category: science Page 2 of 12

Mona Lisa and her pals

I saw an interesting news headline on Facebook this morning:

They linked a CNN story named, “ ‘Mona Lisa’: Hidden portraits ‘found underneath’ ” which I promptly read. Given that we’re talking about a painting, it’s not unreasonable to expect an image, right? I want to see! All CNN gives us is a description.

The hidden picture shows a woman looking into the distance, with no trace of the characteristic smile. Cotte believes he has discovered the genuine portrait of Lisa del Giocondo, also known as Lisa Gherardini, the wife of a Florentine merchant.

When reporting on a purely visual item, like a painting, I expect a photo. If that’s not possible, it’s not unreasonable to expect an explanation. Simply saying that the investigators haven’t yet released an image would be sufficient. Come on, CNN!

Despite the disappointing reporting, this is so interesting. There’s another painting under the Mona Lisa, or perhaps an earlier revision? It’s been there, and unknown, for five-hundred years. Of course I want to see it now!


Image capture from Facebook.com

Dawkins on astrology

Astrology […] is an aesthetic affront. Its pre-Copernican dabblings demean and cheapen astronomy, like using Beethoven for commercial jingles. It is also an insult to the science of psychology and the richness of human personality.

Richard Dawkins, Unweaving the Rainbow, 1998

Science under Trudeau

Nothing’s really changed yet, but I’m cautiously hopeful.

On September 25, the Federal Liberal party released a statement1 that included this music to my ears:

The muzzling of scientists and the Conservative suppression of scientific information is an assault on democracy and an embarrassment to Canada on the international stage. The Liberal Party of Canada is committed to revoking the rules and regulations that muzzle government scientists and allow them to speak freely about their work, with only limited and publicly-stated exceptions. In addition, we will consolidate government science so that it is easily available to the public at-large through a central portal.

Further to this, should the Liberal Party of Canada form the next government, we will create a Chief Science Officer, whose mandate will include ensuring that government science is freely available to the public, that scientists are able to speak freely about their work, and that scientific analyses are appropriately considered when the government makes decisions.

Kirsty Duncan, Ph.D.

Earlier today, Prime Minister-designate Justin Trudeau because Prime Minister Justin Trudeau when he and his cabinet were sworn in. Of particular interest to me is Ontario MP Kirsty Duncan who took the Science portfolio. Is this the Chief Science Officer mentioned in the press release? I have no idea.

What I’m particular pleased about are Kirsty Duncan’s qualifications. According to Wikipedia2,

After graduating from Kipling Collegiate Institute in 1985 as an Ontario Scholar, Duncan studied Geography and Anthropology at the University of Toronto. She then entered graduate school at the University of Edinburgh in Scotland, and completed a Ph.D. in geography in 1992.

She’s a scientist. Anyone with a Ph.D. has contributed new research to their field even if they never do anything else.

Who previously held the science portfolio? Harper’s last assignment to the post was Roy Cullen3, a chartered accountant with a Bachelor of Arts in business administration and a Masters in Public Administration. I’m sure he’s got mad skills in administration, but a science post should be held by a scientist. It’s not fair to expect a business administrator to have a vision about science. This has always bothered me about government portfolios. The politicians are shuffled about and none of them have any expertise in the fields they’re heading. I’m thrilled to see Trudeau has appointed people with expertise in their portfolios.

I remain cautiously hopeful and remind myself that it’s still early.


  1. Open letter to Canada’s public servants” from liberal.ca, retrieved November 4, 2015.
  2. Kirsty Duncan” from wikipedia.org, retrieved November 4, 2015.
  3. Roy Cullen” from wikipedia.org, retrieved November 4, 2015.

Super-Blood-Moon!

We had a lunar eclipse this evening! The news was hammering on about the super-blood-moon. Can they be any more dramatic? I suppose it wasn’t the most exiting news day. It was a super-moon because it was at perigee, which is the point in its orbit nearest the earth. It’s a blood-moon because a total lunar eclipse has a red colour.

Before the whole show started, I went outdoors to make sure I knew where the moon was going to be, and plan where I would be to see it. It certainly did seem brighter than normal. I took a photo of what I saw.

4M6C3461.CR2: 5D Mk.III, EF 400mm 1:5.6L @ 1/400, f/8, 100 ISO

4M6C3461.CR2: 5D Mk.III, EF 400mm 1:5.6L @ 1/400, f/8, 100 ISO

To my great disappointment, a cloud bank was approaching. This was the best I could manage once the clouds arrived, and as you can see, the Earth’s shadow covers just less than half of the moon. Also note that the shadow is curved. This is why Aristotle (correctly) deduced that the earth was a sphere 2400 years ago!

4M6C3463.CR2: 5D Mk.III, EF 400mm 1:5.6L @ 0.4, f/5.6, 1600 ISO

4M6C3463.CR2: 5D Mk.III, EF 400mm 1:5.6L @ 0.4, f/5.6, 1600 ISO

To my surprise, as totality approached, the clouds cleared out. Here, the Earth’s shadow almost completely covers the moon. Note that it doesn’t really look like the photo below. Your eyes can see far more dynamic range (light and dark) than my camera. The photo shows just a sliver of light and the rest is invisible, but looking at it, you could see a hint of the rust coloured tinge on the shadowed portion.

4M6C3474.CR2: 5D Mk.III, EF 400mm 1:5.6L @ 1/200, f/5.6, 3200 ISO

4M6C3474.CR2: 5D Mk.III, EF 400mm 1:5.6L @ 1/200, f/5.6, 3200 ISO

The photo above was exposed to show you the bright portion of the moon. The photo below is exposed to show you the portion of the moon in shadow. The over-exposed part looks like it’s bulging, but it really isn’t. That’s an artifact of the over-exposure.

4M6C3475.CR2: 5D Mk.III, EF 400mm 1:5.6L @ 0.3, f/5.6, 6400 ISO

4M6C3475.CR2: 5D Mk.III, EF 400mm 1:5.6L @ 0.3, f/5.6, 6400 ISO

I wanted to wait for the middle of the totality so the moon would show as uniform a brightness as possible. Even the photo below shows a bright lower-right limb because it was taken toward the beginning of the totality. Still, it shows a great improvement as compared to the photo above. But I couldn’t wait any longer because another wave of clouds arrived.

4M6C3497.CR2: 5D Mk.III, EF 400mm 1:5.6L @ 1/4, f/5.6, 6400 ISO

4M6C3497.CR2: 5D Mk.III, EF 400mm 1:5.6L @ 1/4, f/5.6, 6400 ISO

Note also that while many total lunar eclipse photos will appear like the photo above, it doesn’t look at all like this to the naked eye. It looks far dimmer and more rust coloured than orange. Note also that the last two photos have specs in the blackness around the moon. Those are stars. The other photos don’t show any stars because the exposures are much shorter. As a comparison, the camera settings I used for the last two photos allow about 12 times as much light into the camera as compared to the third-last photo and 1500 times as much light as the first photo.

All in all, I’m very pleased. Even with the clouds. The last time I took photos of a lunar eclipse, it was ‑20º outdoors. That wasn’t much fun.

Cognitive dissonance

Sections 4 and 5 of the Controlled Drug and Substances Act prohibit possession of non-dried forms of cannabis. This means that medical marijuana users have been allowed to only smoke. Getting the marijuana in pills, oils, tea, or even brownies has been illegal.

I find this curious because smoking is drilled into us as being a very bad thing. Wouldn’t it be better to get the same medical ingredient without smoking? One person I saw interviewed about this has a seven-year-old child who would benefit from medical marijuana, but the parent understandably isn’t comfortable with the child smoking it.

So the court cases started. British Columbia courts ruled that the law went against medical marijuana users’ right to consume it in the form they chose. The Federal Government took it to the Supreme Court of Canada, and lost. According to the CBC, the court ruled unanimously that the current restriction violates the rights of medical marijuana users “in a manner that is arbitrary and hence is not in accord with the principles of fundamental justice.”

The government is not pleased. Health Minister Rona Ambrose said,

Let’s remember, there’s only one authority in Canada that has the authority and the expertise to make a drug into a medicine and that’s Health Canada. Marijuana has never gone through the regulatory approval process at Health Canada, which of course, requires a rigorous safety review and clinical trials with scientific evidence.

I’m still laughing. The idea that the Harper government would consider scientific evidence in making decisions is ridiculous. They make up their minds first, and if science backs their decision, they’ll use it. Otherwise, science is ignored.

Shame on Stephen Harper and his government.

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