The Milikan Oil Drop experiment an experiment where you measure the elementary electric charge of an electron. This is done by examining tiny charged droplets between two electrodes. The plates are charged to the point where the droplets were at mechanical equiplibrium. From this the charge of the electron (based on the size of the droplets and the material of the droplet.).
United Scientific’s Milikan Oil Drop Apparatus allows modern physics students to perform the Oil Drop Experiment in their own lab.
This Milliklan Oil Drop Apparatus is hooked up to a computer via USB cable where the results can be studied. A version with a monitor is also available. The apparatus consists of an oil drop chamber with a mercury lamp, a digital voltmeter, a CCD camera, an atomizer, and a digital timer. Software is also included.
The Oil Drop Chamber is made of an accurately dimensioned polymer cyclinder with two precisely machined paralell end plate electrodes. The cylinder has an illumination opening, an observation opening, and a quartz glass window to exclude drafts. The entire oil drop chamber is housed in a cylindrical dreaft shield. Oil drops fall from a an oil mist chamber above the draft shield into the oil drop chamber through a hole of 0.4mm diameter in the uppoer electrode plate. They are illuminated by an LED.
A built in timer allows users to conveniently measuer the time it takes an oil drop to complete a motion through a measured distance. The distance can be measured on the monitor or via the computer link. Voltage is adjusted via the balancing voltage control and the balancing votlage switch. It can be varied from 0-500V with the control knob.
Two methods for measuring the elementary electric charge of an electron are descreibed in the manual: The Balance method and the Ris and Fall Method.
Want to buy the Millikan Oil Drop Experiment Apparatus?
The fine folks at Picoturbine, makers of multiple STEM products now are offering their new Intermediate 2X 3D Printer
Costing just under $1,000, this printer is an excellent choice for hobbyist Maker, for school STEM programs, and multiple other appications.
The Intermediate 2X is sourced from the best parts available in the 3D printing world. Time from opening thebox to starting to print new 3D objects can be as low as 30 minutes.
The Intermedaite 2X has a build volume of 8.8″x5.7″x5.9″
Right now, the printer feed material is colored plastic that is available in 1 kg spools in Red, White, Grey, Black, Blue and Yellow
Soon, PicoTurbine plans to offer more durable ABS spools for 3D printing.
The Intermediate 2X includes all needed software for design or importation.
The Intermediate 2X comes with a 90 day warranty and extended warranties of 1,2 or 3 years are availble.
Want to Buy the Intermediate 2X 3D Printer?
For a couple of years we have been offering various wind gnereating kits such as the Savonius Wind Turbine. These kits do quite well but schools may find they need more to teach energy generation as part of a STEM program. So now Picoturbine offers multiple kits for Wind and Solar energy generation. There are several designs that depend on the size & design of the windmill (Mini, Standard, and Limitless) as well as the systems ability to generate AC, DC or both.
Spectrometers are a staple product of high school and University Physics labs. Used for testing and measuring the refraction of light, they are crucial for a lot of optics programs. Among one of the better class of instruments for this purpose is the United Scientific Intermediate Spectrometer
There are a fair number of Laser Optics kits for classrooms on the market, but most of them are design for only a few purposes in demonstrating the properties of optics, lasers, and the like. The United Scientific Laser Optics Demonstrator works as a comprehensive optical demonstration system.
The core of the Demonstrator is a built-in He-Ne (Helium-Neon) laser. Unlike budget systems that may use a LED Laser (which can produce square shaped target dots). In addition the set includes a deflection system, ray optics board, and 30 optical quality glass components on carriers, three magnetic base supports and mechanical stage for wave optics.
The He-Ne laser is mounted horizontally in the demonstrator and the beam is diverted up towards the five mirrors. Each of these mirrors is only partially aluminized so that a fraction of the beam is deflected onto the white optics board to create a ray bundle.
On the white board is a 360 degree graduated table for measurement. The table has a knob on the back of the board so that it can be rotated. In the dead center of the table is a mount where the various glass optical components can be mounted – Demonstration lenes (convex, concave) prisms, mirrors and other optical instruments. Fiber optics are also included.
In addition to these optical ray systems the Laser Optics Demonstrator can be used for several light wave experiments. The base holds the various magnetic base supports that are included with the demonstrator. These components include lenses, polarizers, an air wedge, bi-prism, interference apertures, obstacles. Many interference and diffraction experiments can be performed with these components. The laser is bright enough that most experiments can be held in a bright room, but extended patterns or diffractions may require darkening.
The entire Laser Optics Demonstrator comes in a metal carrying case that measures 15″ x 15″ x 13″.
Want to buy the Laser Optics Demonstrator?
Want to buy other Advanced Physics Classroom Equipment?
As part of our line of Classroom robotics we have carried a selection of fischertechnik’s fine robotic products. Now two more have come into play – 1 an upgrade of a popular kit, the other a new entry. Let’s start with the upgraded kit:
The LT Beginner’s Kit is a beginners package for robotics for kids starting from 8 years old. It contains over 200 components including sensors, actuators, motors and more:
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!