Cockroach robot falls 28m, keeps running
From MAKE Magazine
The UC Berkeley Biomimetics Lab has created DASH (Dynamic Autonomous Sprawled Hexapod), a cockroach-inspired robot made from laser-cut cardboard laminated with some polymer. It runs fast and can withstand falls of 28 meters, after which it just keeps on about its business.
From MAKE magazine:
In MAKE, Volume 19: Robots, Rovers, and Drones, learn how to make a model plane with an autopilot and a built-in robot brain. We’ll also show you how to make a comfortable chair and footstool out of a single sheet of plywood, a bicyclist’s vest that shows how fast you’re going, and projects that introduce you to servomotors. All this, and lots more, in MAKE, Volume 19! Subscribe here, or buy the issue in the Maker Shed.
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Physicist Howard Hayden's one-letter disproof of global warming claims
From Mises Economics Blog
Physicist Howard Hayden, a staunch advocate of sound energy policy, sent me a copy of his letter to the EPA about global warming. The text is also appended below, with permission.
As noted in my post Access to Energy, Hayden helped the late, great Petr Beckmann found the dissident physics journal Galilean Electrodynamics (brochures and further Beckmann info here; further dissident physics links). Hayden later began to publish his own pro-energy newsletter, The Energy Advocate, following in the footsteps of Beckmann’s own journal Access to Energy
I love Hayden’s email sign-off, “People will do anything to save the world … except take a course in science.” Here’s the letter:
***
Howard C. Hayden
785 S. McCoy Drive
Pueblo West, CO 81007
October 27, 2009
The Honorable Lisa P. Jackson, Administrator
Environmental Protection Agency
1200 Pennsylvania Ave., NW Washington, DC 20460
Dear Administrator Jackson:
I write in regard to the Proposed Endangerment and Cause or Contribute Findings for Greenhouse Gases Under Section 202(a) of the Clean Air Act, Proposed Rule, 74 Fed. Reg. 18,886 (Apr. 24, 2009), the so-called “Endangerment Finding.”
It has been often said that the “science is settled” on the issue of CO2 and climate. Let me put this claim to rest with a simple one-letter proof that it is false.
The letter is s, the one that changes model into models. If the science were settled, there would be precisely one model, and it would be in agreement with measurements.
Alternatively, one may ask which one of the twenty-some models settled the science so that all the rest could be discarded along with the research funds that have kept those models alive.
We can take this further. Not a single climate model predicted the current cooling phase. If the science were settled, the model (singular) would have predicted it.
Let me next address the horror story that we are approaching (or have passed) a “tipping point.” Anybody who has worked with amplifiers knows about tipping points. The output “goes to the rail.” Not only that, but it stays there. That’s the official worry coming from the likes of James Hansen (of NASAGISS) and Al Gore.
But therein lies the proof that we are nowhere near a tipping point. The earth, it seems, has seen times when the CO2 concentration was up to 8,000 ppm, and that did not lead to a tipping point. If it did, we would not be here talking about it. In fact, seen on the long scale, the CO2 concentration in the present cycle of glacials (ca. 200 ppm) and interglacials (ca. 300-400 ppm) is lower than it has been for the last 300 million years.
Global-warming alarmists tell us that the rising CO2 concentration is (A) anthropogenic and (B) leading to global warming.
(A) CO2 concentration has risen and fallen in the past with no help from mankind. The present rise began in the 1700s, long before humans could have made a meaningful contribution. Alarmists have failed to ask, let alone answer, what the CO2 level would be today if we had never burned any fuels. They simply assume that it would be the “pre-industrial” value.
- The solubility of CO2 in water decreases as water warms, and increases as water cools. The warming of the earth since the Little Ice Age has thus caused the oceans to emit CO2 into the atmosphere.
(B) The first principle of causality is that the cause has to come before the effect. The historical record shows that climate changes precede CO2 changes. How, then, can one conclude that CO2 is responsible for the current warming?
Nobody doubts that CO2 has some greenhouse effect, and nobody doubts that CO2 concentration is increasing. But what would we have to fear if CO2 and temperature actually increased?
- A warmer world is a better world. Look at weather-related death rates in winter and in summer, and the case is overwhelming that warmer is better.
- The higher the CO2 levels, the more vibrant is the biosphere, as numerous experiments in greenhouses have shown. But a quick trip to the museum can make that case in spades. Those huge dinosaurs could not exist anywhere on the earth today because the land is not productive enough. CO2 is plant food, pure and simple.
- CO2 is not pollution by any reasonable definition.
- A warmer world begets more precipitation.
- All computer models predict a smaller temperature gradient between the poles and the equator. Necessarily, this would mean fewer and less violent storms.
- The melting point of ice is 0 ºC in Antarctica, just as it is everywhere else. The highest recorded temperature at the South Pole is -14 ºC, and the lowest is -117 ºC. How, pray, will a putative few degrees of warming melt all the ice and inundate Florida, as is claimed by the warming alarmists?
Consider the change in vocabulary that has occurred. The term global warming has given way to the term climate change, because the former is not supported by the data. The latter term, climate change, admits of all kinds of illogical attributions. If it warms up, that’s climate change. If it cools down, ditto. Any change whatsoever can be said by alarmists to be proof of climate change.
In a way, we have been here before. Lord Kelvin “proved” that the earth could not possibly be as old as the geologists said. He “proved” it using the conservation of energy. What he didn’t know was that nuclear energy, not gravitation, provides the internal heat of the sun and the earth.
Similarly, the global-warming alarmists have “proved” that CO2 causes global warming.
Except when it doesn’t.
To put it fairly but bluntly, the global-warming alarmists have relied on a pathetic version of science in which computer models take precedence over data, and numerical averages of computer outputs are believed to be able to predict the future climate. It would be a travesty if the EPA were to countenance such nonsense.
Best Regards,
Howard C. Hayden
Professor Emeritus of Physics, UConn
Amazing comic book style invitation
From Offbeat Bride
Gaze upon the greatness that is OBT member "Reenie's" geeky, silly, timely, comic book-style wedding invitation!
Reenie sez, "The wording [on the back] is my favorite part. It reads: '[We] request the honor of your presence as two geeks save the princess, resist the dark side and pledge their lives (extra, or otherwise) to each other.' And we snuck a Hyrulian crest in there too!"
With adorableness like that can you believe she actually had doubts about using these invitations!? Mostly for fear that the older generations wouldn't "get it." But then she realized, "if people don't like the invites then they probably won't get the 'Mario Kart Love Song' that plays on our wedsite, or the lightsaber duel mid-ceremony, or the gaming stations or my Death Cab for Cutie inspired wedding tattoo, or any of the other stuff that is 'us.'"
So in featuring these invites we both hope that it inspires someone else to let their inner geek flag fly!
OBT members can check out the original wedding update post here.
