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Posts tagged ‘Physics’

Zeeman Effect Apparatus

When an atom is excited it will emit a photon, making light. When that same light emitting atom is subjected to a magnetic field, its emission lines are split into multiple components at shifted wavelengths. This is known as the Zeeman Effect, named after the Nobel Prize winning physicist who observed the effect in 1896. It is fairly easy to explain, but hard to demonstrate or make in labs because it involves equipment that can cost hundreds of thousands of dollars.

However, from United Scientific’s Advanced Physics Line there is now a Zeeman Effect Apparatus at a much more affordable price!

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Franck-Hertz Apparatus

You might recall from either your physics class or your chemistry class that atoms absorb energy, and in doing so they move electrons from rest states to higher orbits. These electron orbits are quantum in nature – either you have enough energy to go to a higher orbit or you don’t. Electrons do not go half-way to the next orbit. When an electron goes from a higher orbit to a lower one, it releases the energy of that orbit and the atom emits some sort of electromagnetic energy.

One of the earliest experiments demonstrating the electron orbits was the Franck-Hertz Experiment, where vacuum tube filled with heated Mercury vapor had electrons accelerated towards and anode grid with a slight negative charge. This negative charge kept the low-energy electrons away while registering the more energetic electrons.

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The Non-Stop Top

So you take your average top and give it s spin. It goes for a while, then runs out of momentum and can’t stay up and falls over. This comes as no surprise to anyone.

Now we do have a popular mystery top that is a magnetic platform you spin a metal top on and it keeps going for, well, weeks.

But of course, that is a top on a platform. What about a top that goes on its own? A top with fancy platform?

Well, there actually is one. The Non-Stop Top from Can You Imagine.

nonstoptop

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fischertechnik Mechanics & Statics Engineering Kit

fischertechnik (yes, with the lower case ‘f’) makes high quality school education physics & robotics construction kits  that can both entertain and teach students. The kits use a construction toy style (like LEGO or K’NEX)to build the projects. They produce many different kits, and we will be adding them to our product line. But for this post we thought we would concentrate on one particular bit of engineering education: The fischertechnik Mechanic & Static Engineering kit

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This kit has over 500 components for building 30 different models. Included with the kit is a 134 page, full-color construction booklet to help you build the models. Since this is an engineering kit you start with simple designs like Bars & turntables, but soon you will be constructing things like a planetary gear:

3527gear

Of course, this being an engineering kit about statics and mechanics you have to have a bridge model:

3527bridge

Or other concepts in mechanics such as a balance scale:

3527scale

But soon you’ll be producing such exciting models that are based on practical, real-life concepts such as this mechanical mixer – not unlike the model you would see in a kitchen:

3527mixer

There are plenty of other models and the kit has lessons on Dynamics, Electric moors, worm gears, crank gears, madnril screws, and much more!

The Mechanic & Static Engineering kit is powered by a 9V battery (not included) and includes the motor, switch & battery tray.  This is an excellent kit for the classroom or for kids who love to build aged 9+!

Want to buy the fischertechnik Mechanics & Statics Kit?

www.spectrum-scientifics.com

New Sterling Engines

The Stirling Engine is an External Combustion Engine (the heat source is outside the engine) and can use any available source of adequate heat or cold. It is a classic illustration of converting heat energy into mechanical work. We’ve already displayed our awesome Low-Temperature Sterling Engine, which can run off the power of a hot cup of coffee, but we have also now added more impressive Sterling Engines that are great for classroom demonstrations, engineering concepts, or just as desktop toys!

First up is the Basic Sterling Engine:

This unit is powered by a built-in alcohol lamp and has dual pistons like most standard Sterling engines.

However, some folks may want to do something with the kinetic energy produced by a Sterling Engine, so a couple of models show this well. First is a straight mechanical energy conversion that has the Sterling Engine running a car.

Another example converts the mechanical energy produced by the Sterling Engine into electricity by using a small dynamo that powers an LED Light:

All of these models operate off the standard Sterling Engine design. However, also available with this new line of Sterling Engines is a series of variation models. For example we also have the Sterling Engine Type B which operates using a single piston rather than the dual pistons:

Sterling Engine Type B

Also in the line is a Mason Cycle Engine, which is technically not a Sterling Engine – except that it really is. It operates more along the lines of a two-stroke engine but using temperature differences rather than gasoline.

Finally the last of these variants is the Thermoacoustic Sterling Engine. This unit actually produces standing soundwaves that power the piston. Its actually pretty awesome when you think about it!

All of these Sterling Engines are tested before being shipped. They are excellent gifts or demonstration items.  The bases are wood and all the parts machined metal. These are quality crafted instruments and great for engineers or the technologically curious!

www.spectrum-scientifics.com

MENTOS & SODA – The Rocket Car Edition

OK, so pretty much everyone who has been on the internet has had a chance to see the classic Geyser Tube in action – The tube drops the Mentos into the soda bottle, the surface collects the fizzy bubbles and soda come streaming out. Great times! But now there is great new product that takes advantage of this little trick: The Great Geysers Soda Geyser Car

Zoom!

The idea is simple, since soda shoots out real fast when you drop Mentos into it, there should be some reaction to that action. I mean that’s just basic physics, yes? In this case the kit is assembled like a car, but is based around an empty soda bottle. You pour in the soda of your choice (this lets you try different ‘fuel’ experiments) drop in the Mentos and watch the car race off! It goes from 100-200 feet on a ‘charge’ of soda and Mentos. Detailed instructions explain how to assemble the car, how to run the basic car launch, and how to try different experiments with other sodas and such. In classic BeAmzing style the instructions are written for both kids and parents.

The Soda Geyser Car is a great little piece of equipment for Science Fairs to show how different setups can be done and tested. The instructions help out with that part as well!

So take the Mentos & Soda to the next level and have it move a toy car!

www.spectrum-scientifics.com

fischertechnik Mechanic & Static Engineer Set

fischertechnik (yes, with the lower case ‘f’) makes high quality school education physics & robotics construction kits  that can both entertain and teach students. The kits use a construction toy style (like LEGO or K’NEX)to build the projects. They produce many different kits, and we will be adding them to our product line. But for this post we thought we would concentrate on one particular bit of engineering education: The fischertechnik Mechanic & Static Engineering kit

3527

This kit has over 500 components for building 30 different models. Included with the kit is a 134 page, full-color construction booklet to help you build the models. Since this is an engineering kit you start with simple designs like Bars & turntables, but soon you will be constructing things like a planetary gear:

3527gear

Of course, this being an engineering kit about statics and mechanics you have to have a bridge model:

3527bridge

Or other concepts in mechanics such as a balance scale:

3527scale

But soon you’ll be producing such exciting models that are based on practical, real-life concepts such as this mechanical mixer – not unlike the model you would see in a kitchen:

3527mixer

There are plenty of other models and the kit has lessons on Dynamics, Electric moors, worm gears, crank gears, mandril screws, and much more!

The Mechanic & Static Engineering kit is powered by a 9V battery (not included) and includes the motor, switch & battery tray.  This is an excellent kit for the classroom or for kids who love to build aged 9+!

www.spectrum-scientifics.com