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ExpertAverage RatingsExpertise

Dan Fink

U.S.
Available
  • Knowledgeability 9.83
  • Clarity of Response 9.74
  • Timeliness 9.86
  • Politeness 9.92
  • Total Questions 1135
 Though my experience is mostly in the fields of electricity, magnetism, and physics, I have a broad science background. My career is in the field of alternative power sources -- solar, wind, water and battery power. But any questions about electricity, magnetism, energy conservation, power generation, electric motors, and even general physics are very welcome--especially from kids. They ask the best questions of all! I pride myself in answering science questions accurately, with ideas for SAFE, easy experiments that kids can perform by themselves--and that let them prove the answers to their own satisfaction. I think science should be fun .....

MGR

U.S.
Available
  • Knowledgeability 9.71
  • Clarity of Response 9.96
  • Timeliness 9.92
  • Politeness 10.0
  • Total Questions 163
 I can answer elementary and middle school level general science questions, as well as questions on high school level biology, environmental science, and animal science.

Sue Kayton

U.S.
Available
  • Knowledgeability 9.76
  • Clarity of Response 9.74
  • Timeliness 9.76
  • Politeness 9.83
  • Total Questions 482
 I can answer almost any student science question! I especially like ones involving silkworms, spacecraft and computers.

Ralph Salier-Hellendag

Available
  • Knowledgeability 9.83
  • Clarity of Response 9.77
  • Timeliness 9.88
  • Politeness 9.96
  • Total Questions 1092
 Science Fair Judge for many years and experience with robotics, biology, chemistry, industrial processes, metalurgy and metal forming.

Recent Answers

2009-11-07 Change 240V christmas lights to solar lighting:

Hi Carol, This can be done but generally you will need some additional equipment besides a Photovoltaic solar panel array. You will need the following list of equipment: Power converter - This converts

2009-11-06 growing bacteria:

Hi Jawan The easiest thing to do would be to swab surfaces that you touch a lot - like a door knobs or sink, etc. If you put the plats in a somewhat warm dark place, the bacteria will grow quickly

2009-11-04 Separating Salt from Water:

Hi Jacquie -- Well, all a still really is, is evaporating off some stuff while leaving other stuff behind. So if you just leave salt water in a open container for long enough, the water will eventually

2009-11-04 magnets and electro magnets:

Hi Shelly -- If there is any way you can get a photo(s) of the project they are currently trying to do and send it in another query, it would help me immensely. For very simple electric motor experiments

2009-11-04 Magnetic Propulsion:

Hello Scott -- I work with magnets for a living, for a company that designs wind turbine generators that can be built in third world countries, and in your garage at home. With years of experience here

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