Science experiments Definition and 25 Threads

Is there anyway to stop rubber from bouncing? My class is doing an experiment on material absorption. I have been given the task to stop a rubber ball from bouncing. I was given a rubber ball that weighs 5 and a half ounces and has a circumference of 8 in. My material can't be over an inch...

Homework Statement The ratio of KMnO4 to I2 is given by 2 MnO4 - + 16 H+ + 10 I - ⇌ 2 Mn2+ + 5 I2 + 8 H2O the ratio is 2:5 - The ratio of I2 to S2O3 2- is given by 1 I2 + 2 S2O32- ⇌ 2 I-+ S4O5 2- the ratio is 1:2 therefore n(S2O3 2- ) = n(MnO4 - ) x 5 Homework Equations Why the mole of...

Hi all, I hope everyone is well? I'm James Fitzpatrick-Ellis and I have a 6 yo son that I'm trying to get interested in all things science. It is working so far where he wants to make his own experiments up. So far we have: Made slime - if you add red food colouring during the mixing process it...

klotza submitted a new PF Insights post History's First Science Experiments Continue reading the Original PF Insights Post.

Where can I find actual Casimir plates? To buy or hire for experiments, I mean. If so, what do they cost?

Hello, I have an idea i have been working on for some time. I am a meteorologist and pilot, and i love aviation, especially design. I have been playing with the idea of magnetic lift (as in when one magnet is repelled from another magnet) or electromagnetism in an engine, to create a different...

Homework Statement I have a project for my Materials Science and Engineering class and we have were given 4 unknown materials and we have to determine which kind of materials they are. We have to come up with our own experiments. As of now, I've done the Rockwell hardness test, electrical...

I am trying to prove why ultra large crude carriers and other kinds of ships can float, and why they are stable in water? The experiments need to be simple and doable at home. I also could use some formula for stability and dead weight and so on. Could someone please help me, maybe point me...

Hello, I am a ninth grade student in high school and I have a science fair project experiment idea. There will be a homemade marble shooter made with a rubber band. the rubber band will be pulled about half of a foot back and will propel a marble through a tube. the marble will hit a book and...

My daughter is entering a science fair competition in 3 weeks. I'm helping her with her experiment. She is 10 years old, in 4'th grade and about average to slightly less interested in science. I'm trying to come up with an idea that meets the following criteria... I want it to be at a...

me and my partner did an experiment of turning copper coins into 'silver' and 'gold' we used this site or the info: http://www.nuffieldfoundation.org/practical-chemistry/turning-copper-coins-silver-and-gold But we're having trouble with knowing how to make the calculations of : How much...

The science behind the so called "Philadelphia Experiment"? I have done some digging on the Philadelphia Experiment after watching the actor from Fringe stuble along trying to do a sci-fi science show called "Dark Matters". It was disgusting even to an intelligent, but mostly layperson. Anyway...

Homework Statement A small balloon was inflated with air at 1460 ft above sea level at a temperature of about 75 F. After inflating it was attached to a nanometer and depressed 18.25 inches of water. It was then tied-off. It's mass, with the nipple removed, measured about 156 milligrams. The...

Hello, I'm in 9th grade looking for some interesting topics to do my science experiment on this year. I'm particularly interested in how magnetic fields affect photons. I know photons are electrically neutral but I'm looking for some "what if?" types of questions. I think somehow being able to...

Hi guys, I'm looking for a book that will detail all the great science experiments (such as double slit, oil drop experiment, thompson's cathode ray) in a nice, detailed, chronological fashion, that can also be understood by non-science experts. Anyone got a good resource?

Background: BS physics, double minors in chem and math, c/o 2008. Started with chem major, but switched to physics for interest/challange. No absolute career goals, but always considered bigpharma as a good place to go. Considered physics grad school, but never that interested in teaching...

When ideas are being developed what usually comes first? Theory or Experiment?

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Homework Statement For a science experiment you need to electroplate a 130 nm thick zinc coating onto both sides of a very thin, 3.0 cm*3.0 cm copper sheet. You know that the charge carriers in the ionic solution are divalent (charge 2e) zinc ions. The density of zinc is 7140 kg/m^3 If the...

Homework Statement I didn't get time to finish the experiment, and didn't get much done, so my teacher told me to copy someone elses work and varify if it was correct, but i don't know how. here is the info i have: Qualitative Analysis of Unknown Gasses In this experiment, you will be...

Hi. I am writing preschool science activities and would like to verify what the scientific principles behind them are. First example: when you put raisins in clear soda pop, exactly what causes the bubbles around the raisins to pop when they reach the top? Is it only the outside air...

Homework Statement The problem is "will studying using flash cards improve my grade on a test?" I was wondering what would be the materials, what would be the control group and experimental group, and what would be the procedure and what would be the stuff for the observation chart...

(Hello physics forums. I absolutely love the level of discussion here, and I look forward to contributing as soon as I figure out what you're all talking about.) I attend creationism/ID meetings to defend against misrepresentations of science. Since there is no debate, I don't attend to do...

Religious people believe in NDEs but there's debate in Science. They say it's just a hallucination. What if you're hallucinating about something real? Blind people could help solve this. Habe any blind people with the visual part of their brain permanentlydamged ever had a near death experience?

Does anybody have any good ideas for easy science experiments? I have a proposal due tomarrow for a science experiment. I'ts a 7th grade science class, but I've just been coming up with ideas that are way to complex and ahead of the class. I need smoething simple, yet shows good understanding of...