2012-01-16
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28-000033 Projectile launcer SEK 3.714:- exkl moms
Use the Vernier Projectile Launcher to investigate important concepts in two-dimensional kinematics.
Contents
Description
Use the Vernier Projectile Launcher to investigate important concepts in two-dimensional kinematics. Launch steel balls at angles between 0 and 70 degrees and over distances up to 2.5 m.
The solid, heavy base is provides an easy-to-use and reliable setup. A unique pneumatic launching system provides excellent repeatability and allows you to set the launch speed.
Built-in photogates and angle markings provide easy and accurate measurement of the ball’s launch velocity, allowing for precise quantitative analysis of projectile motion. Simply plug the device into a compatible data-collection interface.
Specifications
- Launch angle: 0 to 70 degrees
- Launch speed: 0-6 m/s
- Launch height: 146 mm
- Maximum launch distance: 2.5 m
- Internal photogate interval: 50 mm
- Steel ball diameter: 17.46 mm
- Steel ball mass: 21.8 g
Experiments
Sample experiments include:
- Investigate the independence of the horizontal and vertical motion
- Use the photogates to measure launch velocity
- Knowing the launch velocity, predict the landing point when a ball is launched horizontally from a table top
- Knowing the launch velocity and launch angle, predict the landing point when a ball is launched at an angle on a lab table
- Knowing the launch velocity and launch angle, launch a ball through a horizontal or vertical hoop
- Investigate projectile range as a function of launch angle
- Determine which launch angles give the same range
- Determine which launch angle gives the maximum range
- Investigate the repeatability of the launcher
- Use the launcher, a video camera and the video features of Logger Pro to observe the launch path
- Given a specific launch distance, calculate the launch velocity needed to hit the target. Use the photogates to set the device to that launch velocity and test your prediction.
What’s Included
- Launcher
- 6 Steel balls
- Hand pump
- 2 pair of goggles
- Level
- Roll of wax marking paper
- Photogate cable
Compatibility Information
Software
- Logger Pro 3.8.4.2 or newer
- LabQuest App 1.6 or newer
Interfaces
- LabQuest
- LabQuest Mini
- LabPro*
- TI Lab Cradle*
28-000032 Chemical Polarimeter SEK 7.743:- exkl moms
The Chemical Polarimeter is a device used for measuring the rotation of plane-polarized light caused by optically active substances such as organic, inorganic, or biological compounds.
Contents
Description
The Polarimeter can be used to measure chiral properties of optically active samples without chemically modifying or destroying the sample. This is a vertical polarimeter that uses a 589 nm LED, a fixed polarizer, and a manually rotated polarizer to detect changes in rotation of plane-polarized light in the presence of an optically active compound. Used with Vernier technology, students no longer have to determine the optical maximum with their eye but have a graph that shows a clear change in the light’s polarization.
Specifications
- Encoder Resolution: 0.25°
- Accuracy (optical rotation measurements): ±1°
- Sensitivity: typically up to OD 2
- Optical Encoder: Bidirectional, quadrature encoder, 360 cycle per revolution
- Light Source: LED
- Wavelength (nominal): 589 nm
Experiments and Lab Ideas
- Determine sugar solution purity by optical rotation.
- Characterize the purity of organic and inorganic syntheses yielding chiral products.
- Determine the enantiometric purity of optically active compounds.
- Resolve racemic mixtures.
- Study the kinetics of acid-catalyzed hydrolysis.
- Study the kinetics of enzyme-catalyzed hydrolysis.
- Explore the optical activity of amino acids.
What’s Included
- Vernier Chemical Polarimeter
- One Chemical Polarimeter Sample Cell
- User manual
Sensor Requirements
The Chemical Polarimeter requires a compatible interface and software to collect data. Interface and software sold separately. Getting started with probeware »
Compatible Interfaces
The Chemical Polarimeter is compatible with these interfaces:
Software Requirements
The Chemical Polarimeter requires data-collection software:
