Star in the Jar

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Early nuclear weapons utilized fission while more advanced ones utilize fusion. IFOD on Atomic vs. Hydrogen Bombs How a Fusion Reactor Might Work I feel like a new mama having so many fun ideas. I used to dread the afternoon, after naps, as it was so boring doing the same thing day after day but now I look forward to our "play" time! - Haley S. But even at this point you can still see the stars shooting around and the water seems like it’s swirling and moving around like a galaxy deep in space. Expect the Unexpected I absolutely love that this takes all the prep work out of engaging my children. It is so easy to just put up the calendar, and glance at it for inspiration when we are in a funk." - The Activity Room Member, Rachel

I’ve learned to prepare myself mentally ahead of time for “something” to happen that I have to deal with on the fly. Several detractors have compared the new Science report to the infamous “cold fusion” announcement made in 1989 (SN: 4/1/89, p. 196). Two electrochemists claimed then to have sparked fusion at room temperature by passing electric current through a bath of water in which ordinary hydrogen is replaced by deuterium, a heavier isotope. However, neither the original pair nor anyone else could reproduce those findings, which have since largely been discredited as a case study of mistaken science (SN: 6/22/91, p. 392). He is already thinking about his next project. “I was thinking that maybe I could make a hand-held laser cutter,” says Edwards. “So I’ve been looking into some really high-powered lasers.”

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Other critics say that the most damning indictment of the new work is an unpublished follow-up experiment by a pair of nuclear physicists, also of the Oak Ridge lab. Reward charts for autistic children can help them to understand how their behaviour can have positive consequences or help them achieve simple aims. Even if the experiments did yield fusion reactions, practical technology based on the phenomenon would be a long way off. However, many scientists have already pronounced the new findings dead wrong. Bristling at comparisons to the cold-fusion drama, the Oak Ridge researchers say that their findings withstood extensive peer review before being published. The cold-fusion claim in 1989 was announced to reporters before being submitted for publication. Ebony Feare is a deliciously charismatic tortoise, languorous with an impressive range of reptilian faces and stances and a resonant singing voice. Stefan Stuart’s ever impatient hare, more boyish than leporine, makes for an appropriately lively contrast despite his weaker singing voice.

As soon as I opened this book and began to read, my eyes lit up and my heart warmed at the sight of these beautifully-drawn illustrations that help to really set itself apart from many of its contemporaries. This story is both preciously told in word and beautifully depicted in picture which combine to make it an absolute joy and pleasure to behold. Bringing plenty of warmth and light, it really does give us the little lift we all need! A group of scientists claims to have found evidence of nuclear fusion in a vase-size flask of liquid. The researchers say they created tiny bubbles that seemed to have collapsed with enough violence to force atomic nuclei to fuse. BUBBLE MAGIC. In a flask of acetone bombarded by sound waves, a cloud of bubbles (arrow) briefly swells to the size of a pea before collapsing. Courtesy of Oak Ridge Natl. Lab., Rensselaer Polytechnic Inst., Russian Acad. Sci. THE BIG SQUASH. A neutron pulse (arrow) combines with a sound signal (blue) in a flask of acetone to generate the conditions for a bubble (brown) to form, grow, and then implode with great force. After Taleyarkhan et al./Science

Super hot plasma cannot be contained by any known material. In a fusion reactor, a magnetic field is used to contain the plasma. Knowing there was potential for this space experiment to get really messy with my kids I make sure to lay down a plastic bag on the floor. In the current setup, creating sonoluminescence takes far more energy than the bubble collapse gives off, even if fusion is taking place, Taleyarkhan says. I suggest having older kids keep changing colors to make this part of the space experiment last longer. So I thought it would be fun to try a little space science experiment in a jar and make our own shooting stars with the kids. Shooting Stars in a Jar Space Experiment for Kids

They just don’t have the evidence,” says William C. Moss of Lawrence Livermore (Calif.) National Laboratory, one of several sonoluminescence specialists who have theorized that fusion in collapsing bubbles is feasible. His headmaster was concerned about safety. “There was the chance that I could be electrocuted by the high-voltage power supply ... and then probably the chance of the vacuum chamber imploding because of all the forces on it,” says Edwards, “but quite a minimal aspect to it was the radiation.” Using his younger sister’s fish tank filled with a water and boron solution: “The radiation wasn’t really an issue.” Fission: Current nuclear reactors use nuclear fission as power. Fission occurs when an atom is split when hit by a subatomic particle. In a nuclear reactor the fuel is a relatively unstable atom such as Uranium or Plutonium and the splitting of their atoms creates a chain reaction as neutrons released by each fission triggers the splitting of other atoms. When fission occurs it creates a great deal of energy.

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EAST ( Experimental Advanced Superconducting Tokamak). EAST is a fusion reactor based in Hefei, China. EAST, like ITER, is a tokamak style reactor. But, unlike ITER, its a small reactor – only a few meters across. It is an experimental reactor. Information on EAST here. The Chinese EAST Reactor When Can We Expect Fusion to Work as a Power Source? There is a potential second approach. According to the New York Times: “A second approach uses large, intense lasers to bombard a frozen pellet of fusion fuel (deuterium and tritium nuclei) to heat the pellet and cause fusion to occur in a billionth of a second. Whereas magnetic fusion holds a hot plasma indefinitely, like a sun, the second approach resembles an internal combustion engine, with multiple mini-explosions (about five per second).” Some Potential Amazing Benefits of Fusion In een ster van ver maken we kennis met een kleine schatzoeker en zijn grote zus. Het kleine broertje verzamelt dag in dag uit gevonden schatten (veertjes, steentjes,…) tot hij op een dag iets heel bijzonders vindt: een echte ster! Next you want to put about a 1/2 cup of oil from your bottle in the small jar or fill half way depending on the size. My kids love science experiments! And they also love outer space and stars. So what better idea then a shooting stars in a jar space experiment activity for kids?