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Senin, 30 Desember 2013

How Robert Goddard Almost Killed Space Flight onlinecollegedegreee.blogspot.com

Written By 12; About: How Robert Goddard Almost Killed Space Flight onlinecollegedegreee.blogspot.com on Senin, 30 Desember 2013

onlinecollegedegreee.blogspot.com How Robert Goddard Almost Killed Space Flight

How Robert Goddard Almost Killed Space Flight


Everyone knows how Robert Goddard built and flew the first-ever liquid fuel rocket on March 16, 1926. And they are absolutely right. Everyone also knows how this paved the road to space by allowing the construction of rockets powerful enough to leave the earth. Well, maybe not so much.


How Robert Goddard Almost Killed Space Flight


Before 1926, Goddard was a gung-ho proponent of space travel—and especially space travel by means of rocket propulsion. After all, he'd been working on developing high-altitude rockets—under a Smithsonian Grant, yet—since 1916 and had already received patents for a liquid fuel rocket and a step-rocket in 1914.


How Robert Goddard Almost Killed Space Flight


Goddard's moon rocket


Nor was Goddard particularly shy about promoting his ideas. In a 1920 article for Popular Science he described his scheme for hitting the moon with a rocket carrying a charge of flash powder. Goddard had calculated that although a visit to the moon via a manned rocket was still out of the question at the time he was writing, it would nevertheless be possible to "reach out a long arm and tickle the moon" by sending a charge of flash powder, the explosion of which could be observed from the earth. Through his experiments, Goddard had concluded that a minimum charge of 14 pounds was needed to make a visible flash visible. The magazine's editors commented that "Professor Goddard's improvement at a single step transfers the enterprise of hurling the missile to the moon from the class of impractical dreams to the domain of comparatively simple tasks."


The press went nuts with the Goddard story. Newspapers and magazines ate it up. Goddard found himself labeled the "Moon Rocket Man" in headlines around the world.


And that is where things started to go wrong.


Although the Popular Science article inspired at least eighteen people to write to Goddard to volunteer for the first flight to the moon, others looked on Goddard's ideas with a more jaundiced eye. The London Graphic, for instance,immediately published a critique of Goddard's plans for high-altitude and moon-rockets. Some of the objections included the impossibility of safely returning instruments or passengers from such great heights, what the value might be of such an experiment, how the rocket could be protected from atmospheric friction since, " . . . bodies when they speed through the air are subject to friction against the air which is sufficient to generate tremendous heat," with the result that "the rocket will generate a red heat foremost of the first hundred miles." At a speed of 6.4 mps, the Graphic believed, the rocket would "vanish in an incandescent wisp of flame and smoke." Another objection to the moon rocket was that the moon and the earth are moving in different directions and at high speeds, and that there are "incalculable vagaries of air currents" above 20 miles that would make steering the rocket impossible.


Even the New York Times chimed in, Goddard for believing that rockets would work in space where they had no air to "push against." The article finished by saying that Goddard "only seems to lack the knowledge ladled out daily in high schools."


Goddard replied to these and other objections in an article for Scientific American, but to very little avail. International celebrity on the one hand and ignorant criticism on the other was too much for a shy professor of physics at a small New England college. He withdrew from the world like a frightened turtle. He refused to not only talk about his work, he refused to publish anything about it, either. He began working in strict secrecy, as far from civilization as he could get, allowing little if any news of his work to be available to other researchers. And as he entered the 1930s and 40s, Goddard grew ever more secretive and paranoid, eventually moving his work to a remote location in the desert near Roswell, NM (make of that what you will). Serious rocketeers both in the US and Europe were left flummoxed. They knew Goddard was accomplishing great things...they just didn't know how he was doing it. They were left to reinvent from scratch everything Goddard had done.


Thus the construction and launch of Europe's first liquid fuel rocket (and the first anywhere since Goddard's) was delayed until 1931. Built by German engineer Johannes Winkler the two-foot rocket achieved an altitude of nearly 300 feet.


How Robert Goddard Almost Killed Space Flight


Winkler was a member of one the three highly influential rocket societies that had been organized during the 1920s and 30s. The Verein für Raumschiffarht (or VfR, the German Society for Spaceship Travel), the American Interplanetary Society (later the American Rocket Society) and the British Interplanetary Society (the only one of the three to exist in more or less its original form today). The first two of these performed many of the earliest serious and controlled liquid fuel rocket experiments. Unlike Goddard, however, these societies were entirely open and freely shared the results of their experiments.


How Robert Goddard Almost Killed Space Flight


The VfR was eventually subsumed by the German military in the decade preceding World War II. Many of its members were recruited into developing the V2 and other giant rockets at Peenemunde. After the war, the V2 became the model for both US and Soviet rocket development, with most early rockets, such as the US Viking and Vanguard and the Soviet R-1, being derivatives of the German missile. It wasn't until well into the late 50s and 60s that entirely new designs were evolved. Even these benefitted, however, from the earlier German research...research that in turn had been based on the work of amateur experimenters who had been trying to duplicate Goddard's achievements.


How Robert Goddard Almost Killed Space Flight


The conclusion is that much of the development of modern rocketry, at least up through the 1950s, can be traced directly to the experiments of the VfR and ARS—and only tangentially to Robert Goddard. Claims that Wernher von Braun and the Peenemunde team merely copied Goddard's work in developing the V2 have no basis in fact. There is no evidence of any of the European experimenters having had enough access to Goddard's research to enable them to directly duplicate it. All they had to work from was Goddard's inspiration. (Having to reinvent things from scratch didn't always work out so well for everyone. After Goddard's death, his widow sued the US Government for infringing on his patents. The case was eventually settled for $1 million.)


onlinecollegedegreee.blogspot.com How Robert Goddard Almost Killed Space Flight

Senin, 23 Desember 2013

Dinosaurs could be brought back by 'de-evolving' birds onlinecollegedegreee.blogspot.com

Written By 12; About: Dinosaurs could be brought back by 'de-evolving' birds onlinecollegedegreee.blogspot.com on Senin, 23 Desember 2013

onlinecollegedegreee.blogspot.com Dinosaurs could be brought back by 'de-evolving' birds

Dinosaurs could be brought back by 'de-evolving' birds S


It's looking extremely unlikely that we'll ever be able to revive dinosaurs using their fossilized DNA, but if a British biochemist is right, we may be able to recreate these ancient animals by rewinding the DNA of birds.


In a recent Telegraph article, Oxford University's Dr. Alison Woollard explained that, by identifying and altering certain genes found in the DNA of modern birds, scientists may be able to reconstruct the genomes of dinosaurs:



"We know that birds are the direct descendants of dinosaurs, as proven by an unbroken line of fossils which tracks the evolution of the lineage from creatures such as the velociraptor or T-Rex through to the birds flying around today," said Dr Woollard.


"The most famous of these is the Archaeopteryx, a fossil which clearly shows the transition between feathered dinosaurs and modern birds.


"This evolution implies that buried deep within the DNA of today's birds are switched-off genes that control dinosaur-like traits.


"Could we 'rewind' evolution by switching these genes back on and using them to guide the development of that bird's offspring, and its offspring's offspring, backwards?"


All animals and plants are related, sharing a common ancestor that lived about 1.6 billion years ago.


"In theory we could use our knowledge of the genetic relationship of birds to dinosaurs to 'design' the genome of a dinosaur," said Dr Woollard.



The challenge, says Woollard, is understanding the full length of a dinosaur's genome to know which "edits" to make to a bird's genome; surviving dinosaur snippets would be found in very short fragments. So, to make a full genome, scientists would likely have to combine together millions of short fragments of nucleic acids in exactly the right order.


Read the entire article at the Telegraph.


Top image: Audry Atuchin/Natural History Museum


onlinecollegedegreee.blogspot.com Dinosaurs could be brought back by 'de-evolving' birds

Jumat, 20 Desember 2013

Something Called "The Object" Stops World's Largest Tunneling Machine onlinecollegedegreee.blogspot.com

Written By 12; About: Something Called "The Object" Stops World's Largest Tunneling Machine onlinecollegedegreee.blogspot.com on Jumat, 20 Desember 2013

onlinecollegedegreee.blogspot.com Something Called "The Object" Stops World's Largest Tunneling Machine

Something Called "The Object" Stops World's Largest Tunneling Machine S


Bertha, the world's largest tunneling machine, churning through the rock and mud beneath Seattle, has hit a mysterious roadblock—so mysterious, it is only known for now as "the object."


The New York Times reports that the machine—300 feet long and 5 stories tall—has ground to a halt. Built precisely not to be stopped by, well, just about anything, Bertha has apparently met her match. But what exactly is it? "Something unknown, engineers say—and all the more intriguing to many residents for being unknown—has blocked the progress of the biggest-diameter tunnel-boring machine in use on the planet," the NYT writes.


It is something the managers on site "still simply refer to as 'the object.'"


Some hypothesize a colossal ice age boulder or two, locked down in the sediments beneath the city. Others think it might be "buried train engines." Some think it might be Megatron—which would be fitting. After all, check out this incredible picture of Bertha under construction.


Something Called "The Object" Stops World's Largest Tunneling Machine


Some believe the city might even be interfering with itself, so to speak, unable to chew through its own past: "Some residents said they believe, or want to believe, that a piece of old Seattle, buried in the pell-mell rush of city-building in the 1800s, when a mucky waterfront wetland was filled in to make room for commerce, could be Bertha's big trouble."


What "a piece of old Seattle" really is is beyond me, as if a chunk of the metropolis had somehow collapsed into the ground below, like some strange, ingested tumor. But, whatever it is—fragments of architecture or just waste rock and rubble—Bertha has been trapped in its net.


Something Called "The Object" Stops World's Largest Tunneling Machine


Whether it's ice age super-rocks, buried trains, a lost city—or even a UFO—engineers might have to work "at atmospheric pressures similar to what a diver would experience," the New York Times adds, and even spend "time in a decompression chamber" on their way back up to the surface, to find out.


So what is it? What is "the object" blocking Bertha's path? Just look at the size of the tunnels it's been digging; whatever's in the way has got to be one tough mother. [New York Times]


Something Called "The Object" Stops World's Largest Tunneling Machine


Images courtesy of WSDOT.


onlinecollegedegreee.blogspot.com Something Called "The Object" Stops World's Largest Tunneling Machine

Why you should quit your New Year's resolutions right now onlinecollegedegreee.blogspot.com

onlinecollegedegreee.blogspot.com Why you should quit your New Year's resolutions right now

Why you should quit your New Year's resolutions right now


We're facing another stinking year, people. Some of you will be tempted to make some kind of promise to yourself for the new year. Don't do it. According to the "willpower paradox," the determination to do something weakens your will.


One study uncovered what seems to be a "willpower paradox" — the very act of deciding that you're going to do something makes you less likely to do it. Ibrahim Senay, of the University of Illinois, set up a study in which people try to successfully unscramble anagrams. As a test of willpower, it's no Everest, but it did turn up some interesting results. As part of the study, some people were told that they would complete some anagrams. Others were asked to think about whether or not they would do some anagrams. Guess which group finished more anagrams?


The low-achieving group could be simple rebellion; no one likes to be told what to do. Still, that result fits with the results of a variation on the experiment where one group was asked, "as a handwriting sample," to write the words "I will." The other group was asked to write, "Will I?" Again, the less decisive group wrote more than the group that wrote the affirmation.


So perhaps, facing this coming year, you should rethink your traditional New Year's resolutions. Don't say, "I will do this," or "I will do that." Say, "Oh delicious mystery of life! Oh wondrous outpouring of possibility! Shall I use part of this year training for a triathlon? Shall I volunteer at a soup kitchen and learn to speak Portuguese? Shall I go seek a group of mountain gorillas, learn their gentle ways, and teach them sign language? Who can know? The world is meant for discovery and exploration and I tremble with joy as I contemplate what this year might bring!" It might help to have some booze first.


Image: K B.


[Via Scientific American]


onlinecollegedegreee.blogspot.com Why you should quit your New Year's resolutions right now

Kamis, 19 Desember 2013

The cursed coffee experiment! onlinecollegedegreee.blogspot.com

Written By 12; About: The cursed coffee experiment! onlinecollegedegreee.blogspot.com on Kamis, 19 Desember 2013

onlinecollegedegreee.blogspot.com The cursed coffee experiment!

The cursed coffee experiment!


After hearing about so many historical experiments that disregard patients' rights, it does me good to finally find that one - regarding the effects of coffee - proved fatal for everyone but the patients.


Coffee has taken over every country it ever has reached, but in some countries it encountered a lot of resistance. Arriving in Sweden in 1674, it hit the big time became the get-together drink of Swedish intellectuals. Sitting around a pot of coffee they'd discuss the great philosophical questions of the day, like which was the best meatball recipe, and how to wear candles on your head without setting your hair on fire. (I may not know a lot about Swedish culture.)


The cursed coffee experiment!


Coffee was popular, but not with everybody. King Gustav III ascended to the throne a good three-quarters of a century after coffee came to Sweden. He was eager to turn back the tide. He believed that coffee was a poison, and that people needed to be informed about its terrible effects. To that end, he proposed an experiment.


Gustav located twin brothers who were facing a death sentence, and offered to have their execution commuted to life in prison. There was one condition. One brother would have to drink three pots of coffee a day. The other would drink three pots of tea. Gustav, aided by two physicians, would monitor the twins' health. Surely, Gustav thought, the coffee-drinker would be the first to succumb to this lethal poison.


Unfortunately for Gustav, he found that the one thing more lethal than coffee was being named king of Sweden. He was shot during a masquerade, and died well before either the coffee or tea drinker. Things began to get creepy when both the doctors monitoring the experiment also died, leaving the condemned twins to keep being stuffed full of caffeinated beverages without proper supervision. In case you're wondering, the tea drinker died first - at the age of 83. No one knows the date of the coffee-drinker's death. For all we know, he's still wandering around today.


Via The World of Caffeine, Uppsala Universitet.


onlinecollegedegreee.blogspot.com The cursed coffee experiment!

Rabu, 18 Desember 2013

Here's why winter has the best full moons onlinecollegedegreee.blogspot.com

Written By 12; About: Here's why winter has the best full moons onlinecollegedegreee.blogspot.com on Rabu, 18 Desember 2013

onlinecollegedegreee.blogspot.com Here's why winter has the best full moons

Winter makes for longer nights and shorter days. It also boasts the year's greatest lunar displays – but there's more to this fact than an increase in daily hours of darkness.


In the latest installation of Minute Physics, Henry Reich explains why the arc of a full moon in winter is like that of the Sun in summer, and vice versa: it all has to do with the tilt of Earth's plane of rotation relative to its axis, and the position of the moon throughout its more-or-less monthly orbit of our planet.


The moon's prolonged arc through the wintery night sky is a less-commonly recognized feature of the lunar cycle. It's an intuitive one, if you stop and think about it, but Reich's explanation is still one of the clearest I've heard. Good stuff.


[Via Minute Physics]


onlinecollegedegreee.blogspot.com Here's why winter has the best full moons

Senin, 16 Desember 2013

Happy Monday. Have some nightmare fuel. onlinecollegedegreee.blogspot.com

Written By 12; About: Happy Monday. Have some nightmare fuel. onlinecollegedegreee.blogspot.com on Senin, 16 Desember 2013

onlinecollegedegreee.blogspot.com Happy Monday. Have some nightmare fuel.

Happy Monday. Have some nightmare fuel.


Above: A moth, shown here deploying its "relatively large protuberances." Just imagine those things wriggling their way up your nostrils and tickling the backs of your eyeballs.


As RAIJU points out in the comments, these protuberances are in fact the pheromone-dispersing androconial organs of a male moth. More androconial organs here. Video, with party-horn noise, courtesy of redditor Chucke4711:


Don't ever change, Internet.


[Fencehopping via Boing Boing]


onlinecollegedegreee.blogspot.com Happy Monday. Have some nightmare fuel.

Kamis, 12 Desember 2013

Arrow gives us the villain (and hero) we've been waiting for. Again. onlinecollegedegreee.blogspot.com

Written By 12; About: Arrow gives us the villain (and hero) we've been waiting for. Again. onlinecollegedegreee.blogspot.com on Kamis, 12 Desember 2013

onlinecollegedegreee.blogspot.com Arrow gives us the villain (and hero) we've been waiting for. Again.

Arrow gives us the villain (and hero) we've been waiting for. Again.


Nothing really happens in last night's episode. And yet the episode is filled with Things Happening. Let's look at the episode-long highlight reel.


What actually happened in last night's episode? I guess they got rid of Solomon Grundy, but there wasn't really anything tight enough to call a plot. The title, "Three Ghosts," indicates the episode's disjointed nature. Even one of those ghosts — which Ollie is hallucinating — turns out not to be a ghost, further fragmenting the theme. That's how messy it was. And yet it had a lot of great moments.


This wasn't what you'd call a funny episode, but I had some private hilarity. If you recall, last episode they drugged Barry, and hauled him to the Arrowcave. Why they did this, I don't know. Supposedly they did it because he needs to cure Ollie of whatever drug got stuck in Ollie's thigh last week. Realistically, Barry is not a doctor. He can't help. So when he says things like, "I can think of four different diagnoses," I laugh and laugh and also think of four diagnoses. (I came up with flu, syphilis, fluphilis, and syphloo. Be fair. My guess is as good as Barry's.) Barry finds out that Ollie's blood is coagulating inside him. Felicity says, "But you can save him, right," and I want, so much, for Barry to say, "No, Felicity. I can't. I'm not a doctor." Instead, it's even better. He gives Ollie a dose of anticoagulant in the form of rat poison. This leads Ollie to say the line that makes me laugh until I snort nutella up my nose, "The rat poison you gave me — are there any side effects?"


Arrow gives us the villain (and hero) we've been waiting for. Again. S


There's even more hilarity when Roy takes his pierced leg to Thea and Sin, who also totally fail to go to a doctor. Instead they put him in bed and let Thea's drunken, PTSD-suffering, CEO brother yank out the arrow. Nary a protest between them. Having created a massive bleeding wound, that brother then calls his driver so that driver can make his way to the house and, when he arrives, perhaps stitch up the hole. Who are these people? Did someone in scrubs bite them when they were children?


Ollie is hallucinating three dead people. First there's Shado, who tells him to live. I don't know why she would bother, because during island flashback, Ivo makes Ollie chose whether Shado or Sarah will be killed. Given the choice between the woman who is currently his girlfriend, is a valuable and trusted ally, and has saved Ollie's life while teaching him martial arts, and the woman who has betrayed him multiple times, Ollie falls on his knees in front of Sarah. That is some blond solidarity, right there.


Arrow gives us the villain (and hero) we've been waiting for. Again. S


Shado, in what is a genuinely shocking moment, is killed. Of course, then Slade pops to life again. (When Ollie hallucinates him as a ghost he says that Ollie is a coward and deserves to die more than the conventional thousand deaths for it.) Slade uses his superstrength to massacre most of Ivo's group. Sarah displays her value by lying her head off, saying, "Ivo killed her. He didn't say why."


I'm torn about this. On the one hand, it fits into the developing plot of the episode and really works dramatically. On the other, it seems like a fridging. If anything, Shado is more of a Green Arrow villain then Deathstroke. He was a Teen Titans villain, originally. Something better could have been done with her. Then again, it's not like you can rely on anyone to stay dead on this show.


Arrow gives us the villain (and hero) we've been waiting for. Again. S


Speaking of dead people, the last ghost is Tommy. He is, I suppose, the Ghost of Self-Esteem. It's lucky he comes when he does because Ollie really needed him. Roy regained just enough leg strength to get himself kidnapped and injected with the serum. Laurel had tipped him off that Sin's dead friend had been psychologically evaluated at a suspicious clinic. (Laurel is also in a romance with Alderman Blood. I swear, Katie Cassidy must have walked into the writers' room holding a hunting knife in one hand and someone's severed head in the other because they're finally making her character relevant again.) When Roy checked out the clinic and found the guy's file stamped "Mirikuru" (oy), he got nabbed.


Ollie attempts to save him, gets beat down, and that's when Tommy's ghost steps him and calls Ollie a hero. He apparently also gives Ollie punch and murder power, because suddenly Ollie can take out Grundy with punches and acid. Roy survives the injection, is healed, and inexplicably lies to Thea about the whole thing. I'm sure that won't cause any problems.


Arrow gives us the villain (and hero) we've been waiting for. Again. S


Now let's get to the good stuff. Blood goes to his boss, saying that he'll have to re-start making the serum. We don't need more than the boss saying a few words in a familiar accent to know who he is, but I love the reveal of Slade Wilson, now Deathstroke, with the goatee and the eye patch. We've been waiting for this for a season and a half. I think this franchise found a way to get lasting success. Throw in all the Big Bad villains you can in every season. Ra's al Ghul, whoever Isabel turns out to be, Brother Blood, Barrowman, and Deathstroke — it's a delicious broth of villainy and I want to stick my face in it.


And now, the continuity question: Which did you like better, Ollie finally, finally, after all this time, getting a mask? Or Barry's big transformation into the Flash?


onlinecollegedegreee.blogspot.com Arrow gives us the villain (and hero) we've been waiting for. Again.

Selasa, 10 Desember 2013

The Voices in Ryan Reynolds' head command him to kill onlinecollegedegreee.blogspot.com

Written By 12; About: The Voices in Ryan Reynolds' head command him to kill onlinecollegedegreee.blogspot.com on Selasa, 10 Desember 2013

onlinecollegedegreee.blogspot.com The Voices in Ryan Reynolds' head command him to kill

The Voices in Ryan Reynolds' head command him to kill


Ryan Reynolds has been in a bit of a slump lately, but color us greatly intrigued by his newest film, The Voices. Directed by Marjane Satrapi, the author of the acclaimed graphic novel Persepolis, The Voices stars Reynolds as a man who falls in love with his co-worker... and then accidentally kills her. At which point his pets start talking to him.


Of course, his dog Bosco is kind and benevolent, while his cat Mr. Whiskers is completely evil. It sounds like the recipe for a family-friendly kids movie with CG animals, except that business about the murder and the fact that Satrapi's directing it — we just can't imagine her wasting her time with anything fluffy or inconsequential. The Voices will premiere at the 2014 Sundance festival, so we'll know more then.


[Via Coming Soon]


onlinecollegedegreee.blogspot.com The Voices in Ryan Reynolds' head command him to kill

Kamis, 05 Desember 2013

The Amazing Spider-Man 2 trailer is pretty legitimately amazing onlinecollegedegreee.blogspot.com

Written By 12; About: The Amazing Spider-Man 2 trailer is pretty legitimately amazing onlinecollegedegreee.blogspot.com on Kamis, 05 Desember 2013

onlinecollegedegreee.blogspot.com The Amazing Spider-Man 2 trailer is pretty legitimately amazing

Not bad, Amazing Spider-Man 2, not bad at all. I'm still not sure about cramming all of those villains in there (and I'm still not sure how I feel about Andrew Garfield as Spidey) but clearly the movie will not be without its awesome action sequences.


A few thoughts:


• Did Spidey jump out of a plane there at the beginning?


• Dane DeHaan looks like a comic book supervillain, so good casting there.


• I assume we'll finally get the Peter's parents stuff cut from the first movie, although it would be really funny if they cut it again.


• That's Doc Ock's rig there in the Oscorp labs, and maybe the Vulture's harness?


• Well, that explains why Harry and not Norman is suiting up.


• That said, what the hell is up with Harry's hair in the Goblin rig?


onlinecollegedegreee.blogspot.com The Amazing Spider-Man 2 trailer is pretty legitimately amazing

Rabu, 04 Desember 2013

How to make a Pan Galactic Gargle Blaster (on Earth) onlinecollegedegreee.blogspot.com

Written By 12; About: How to make a Pan Galactic Gargle Blaster (on Earth) onlinecollegedegreee.blogspot.com on Rabu, 04 Desember 2013

onlinecollegedegreee.blogspot.com How to make a Pan Galactic Gargle Blaster (on Earth)

We're missing more than a few ingredients on this planet to make the infamous cocktail from The Hitchhiker's Guide to the Galaxy — unless someone has a reserve of Arcturan Mega-gin they're not telling us about — but this enterprising young man has concocted a recipe that may give Earthlings a semblance of the drink that tastes "like having your brains smashed out by a slice of lemon, wrapped 'round a large gold brick."


Personally, I might suggest adding 1 oz of Everclear to make sure the brick part is truly represented, but to each their own.


[Via The Mary Sue]


onlinecollegedegreee.blogspot.com How to make a Pan Galactic Gargle Blaster (on Earth)