Category Archives: General Science

General Science, Popular Culture, Science And Society

He’s Beyond The Event Horizon

John Wheeler has died:

Unlike some colleagues who regretted their roles after bombs were dropped on Japan, Wheeler regretted that the bomb had not been made ready in time to hasten the end of the war in Europe. His brother, Joe, had been killed in combat in Italy in 1944.

Wheeler later helped Edward Teller develop the even more powerful hydrogen bomb.

The name “black hole” — for a collapsed star so dense that even light could not escape — came out of a conference in 1967. Wheeler made the name stick after someone else had suggested it as a replacement for the cumbersome “gravitationally completely collapsed star,” he recalled.

“After you get around to saying that about 10 times, you look desperately for something better,” he told the Times.

He was a giant in physics, and inspired a lot of great science fiction. RIP.

General Science, Popular Culture, Science And Society

He’s Beyond The Event Horizon

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John Wheeler has died:

Unlike some colleagues who regretted their roles after bombs were dropped on Japan, Wheeler regretted that the bomb had not been made ready in time to hasten the end of the war in Europe. His brother, Joe, had been killed in combat in Italy in 1944.

Wheeler later helped Edward Teller develop the even more powerful hydrogen bomb.

The name “black hole” — for a collapsed star so dense that even light could not escape — came out of a conference in 1967. Wheeler made the name stick after someone else had suggested it as a replacement for the cumbersome “gravitationally completely collapsed star,” he recalled.

“After you get around to saying that about 10 times, you look desperately for something better,” he told the Times.

He was a giant in physics, and inspired a lot of great science fiction. RIP.

General Science, Science And Society, Technology and Society

Getting Better All The Time

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Men no longer have go through the drudgery of determining whether or not chix are hawt. We can now have the computers do it for us:

“The computer produced impressive results — its rankings were very similar to the rankings people gave.” This is considered a remarkable achievement, believes Kagian, because it’s as though the computer “learned” implicitly how to interpret beauty through processing previous data it had received.

I wonder what units it used to judge? Millihelens (that amount of female beauty required to launch a single ship)?

Of course, that was the easy part:

Kagian, who studied under the Adi Lautman multidisciplinary program for outstanding students at Tel Aviv University, says that a possible next step is to teach computers how to recognize “beauty” in men. This may be more difficult. Psychological research has shown that there is less agreement as to what defines “male beauty” among human subjects.

No kidding. I’ve sure never been able to figure it out. Maybe it can just check his bank balance.

Which brings up an interesting (and potentially politically incorrect) point. I think that women are clearly much better at determining whether other women are attractive to men than men are at figuring out whether or not other men are attractive to women (at least physically). I suspect that this is because physical attributes are (for evolutionary reasons, unfortunately) where women primarily compete, so they have to be more attuned to it. I also think that this is why women tend to be more receptive to same-sex relations than men, even nominally heterosexual women (hence the concept of the LUG–lesbian until graduation). In order to be a judge of feminine pulchritude, it helps a lot to appreciate it, and it’s a shorter step from there to wanting to experience it up closer and personal than it is for a guy. Particularly a guy like me, who finds men disgusting, and is eternally grateful that not all women do.

General Science, Science And Society

Can Animals Think?

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It’s always been obvious to me that they do, at various levels. I’ve always found bizarre the notion of some scientists that only humans are capable of cognition. As this long but interesting article points out, it makes no sense in evolutionary terms. The cognitive traits that we have had to have their origins somewhere, though what’s even more interesting is that it seems to be a parallel development (that is, like the eye, intelligence has evolved more than once). And it’s not anthropomorphizing to recognize clear thoughtful and volitional behavior in cats and dogs. I don’t understand the thinking of these modern-day Descartes (he didn’t believe that animals were capable of feeling pain) who believe that animals are simply automatons. But then, some of these loons didn’t believe that newborns were capable of feeling pain, either, and used to (and perhaps still do) perform major surgery sans anesthesia, ignoring the screaming.

[Via Geek Press]

General, General Science, Space

First Poppy

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With all the rain they’ve had in southern California this winter, I would expect the poppy season to be gorgeous up in Lancaster. This is a good harbinger of that:

Overlooking the first poppy at the reserve would have been easy. The stem was only a couple of inches high and wind gusts bent the young flower almost sideways. The flower was just off the exit road beyond the park’s kiosk.

“I hope it’s a sign of a good bloom that’s coming,” Scott said after she learned of the sighting.

Elgin said she hopes to pass on poppy updates to enthusiasts who phone the information center.

“I figure in the next couple of days there will be five or six more poppies show up, and each day a few more until the full bloom,” Elgin said.

“There’s indications we’ll have a decent season, but I can’t really predict one that will be exceptionally good because Mother Nature can turn right around and prove me wrong.”

Elgin said the only thing predictable about poppies at the reserve is that they’re unpredictable.

I’m going to Space Access in about three weeks, in Phoenix. When I was looking for tickets, it turned out to make a lot more sense to fly into LA, for schedule and ticket price, and I have other business there anyway, so I’m going to fly out, drive to Phoenix and back, and then fly back to Florida. But I’ll probably be going up to Mojave, so I think I’ll take a still and videocam with me, and make the little side trip in Lancaster to the preserve. And hope that it’s both sunny and not windy (an intersection of conditions that’s unfortunately rare that time of year), because that’s the only time that the flowers are really open and in full bloom.

General Science, Philosophy, Space Science

Don’t Know Much About Gravity

…or at least as much as we think we do. Does the gravity model need to be adjusted?

In the one probe the researchers did not confirm a noticeable anomaly with, MESSENGER, the spacecraft approached the Earth at about latitude 31 degrees north and receded from the Earth at about latitude 32 degrees south. “This near-perfect symmetry about the equator seemed to result in a very small velocity change, in contrast to the five other flybys,” Anderson explained — so small no anomaly could be confirmed.

The five other flybys involved flights whose incoming and outgoing trajectories were asymmetrical with each other in terms of their orientation with Earth’s equator.

For instance, the NEAR mission approached Earth at about latitude 20 south and receded from the planet at about latitude 72 south. The spacecraft then seemed to fly 13 millimeters per second faster than expected. While this is just one-millionth of that probe’s total velocity, the precision of the velocity measurements was 0.1 millimeters per second, carried out as they were using radio waves bounced off the craft. This suggests the anomaly seen is real — and one needing an explanation.

Well, gravity just like evolution, is (in the words of anti-evolutionists) only a theory. It’s not reality–it’s simply an attempt to model it. And for most purposes, it does a pretty good job. But one of the reasons to do space, I think, is that it gives us new laboratories to make new discoveries about basic physics, the potential of which is unforeseeable.

General Science, Philosophy, Space Science

Don’t Know Much About Gravity

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…or at least as much as we think we do. Does the gravity model need to be adjusted?

In the one probe the researchers did not confirm a noticeable anomaly with, MESSENGER, the spacecraft approached the Earth at about latitude 31 degrees north and receded from the Earth at about latitude 32 degrees south. “This near-perfect symmetry about the equator seemed to result in a very small velocity change, in contrast to the five other flybys,” Anderson explained — so small no anomaly could be confirmed.

The five other flybys involved flights whose incoming and outgoing trajectories were asymmetrical with each other in terms of their orientation with Earth’s equator.

For instance, the NEAR mission approached Earth at about latitude 20 south and receded from the planet at about latitude 72 south. The spacecraft then seemed to fly 13 millimeters per second faster than expected. While this is just one-millionth of that probe’s total velocity, the precision of the velocity measurements was 0.1 millimeters per second, carried out as they were using radio waves bounced off the craft. This suggests the anomaly seen is real — and one needing an explanation.

Well, gravity just like evolution, is (in the words of anti-evolutionists) only a theory. It’s not reality–it’s simply an attempt to model it. And for most purposes, it does a pretty good job. But one of the reasons to do space, I think, is that it gives us new laboratories to make new discoveries about basic physics, the potential of which is unforeseeable.