Nasa is a major player in space science, so when a team from the agency this week presents evidence that “impossible” microwave thrusters seem to work, something strange is definitely going on. Either the results are completely wrong, or Nasa has confirmed a major breakthrough in space propulsion.
British scientist Roger Shawyer has been trying to interest people in his EmDrive for some years through his company SPR Ltd. Shawyer claims the EmDrive converts electric power into thrust, without the need for any propellant by bouncing microwaves around in a closed container. He has built a number of demonstration systems, but critics reject his relativity-based theory and insist that, according to the law of conservation of momentum, it cannot work.
According to good scientific practice, an independent third party needed to replicate Shawyer’s results. As Wired.co.uk reported, this happened last year when a Chinese team built its own EmDrive and confirmed that it produced 720 mN (about 72 grams) of thrust, enough for a practical satellite thruster. Such a thruster could be powered by solar electricity, eliminating the need for the supply of propellant that occupies up to half the launch mass of many satellites. The Chinese work attracted little attention; it seems that nobody in the West believed in it.
However, a US scientist, Guido Fetta, has built his own propellant-less microwave thruster, and managed to persuade Nasa to test it out. The test results were presented on July 30 at the 50th Joint Propulsion Conference in Cleveland, Ohio. Astonishingly enough, they are positive.
I can’t believe that microwave thrusters work, the conventional wisdom for over ten years has been that EmDrive was fantasy technology.
“Even if someone makes something terrible—like the music the Insane Clown Posse makes—at least they’re doing something that speaks to them. And they kept going even though people told them it was terrible. And they found their audience, and now they built a community around their work. Look, you couldn’t pay me to listen to their music, but I still feel like I have more in common with the Insane Clown Posse than I do with someone who just sits on the sidelines and shits on other people’s work and who never puts themselves on the line.”
Last February, around 39,000 tons of toxic coal slurry gushed into a major North Carolina river. Now, having cleaned up around 3,000 tons worth, the company behind the spill and state regulators say their work is done.
With 92 percent of the original heavy metal-laden and possibly radioactive coal ash still coating 70 miles of river bottom, river advocates are frustrated.
A job well done!
It was a common scam to circumvent the payment of fares by jamming the token slot in an entrance gate with paper. A passenger would insert a token into the turnstile, be frustrated when it did not open the gate, and have to spend another token to enter at another gate. A token thief would then suck the token from the jammed slot with their mouth. This could be repeated many times as long as no police officers spotted the activity. Some token booth attendants sprinkled chili powder in the slots to discourage “token sucking”. Token sucking (also known as stuff ‘n’ suck) was charged under theft of services, criminal tampering and criminal mischief.
“I get a cease and desist notice when I try to put my own videos on my YouTube channel.”
The Sacramento Bee:
Dire predictions about jobs being destroyed spread across California in 2012 as voters debated whether to enact the sales and, for those near the top of the income ladder, stiff income tax increases in Proposition 30. Million-dollar-plus earners face a 3 percentage-point increase on each additional dollar.
“It hurts small business and kills jobs,” warned the Sacramento Taxpayers Association, the National Federation of Independent Business/California, and Joel Fox, president of the Small Business Action Committee.
So what happened after voters approved the tax increases, which took effect at the start of 2013?
Last year California added 410,418 jobs, an increase of 2.8 percent over 2012, significantly better than the 1.8 percent national increase in jobs.