To study Spectral Lines of Pure Elements / Gases. Gas under pressure in the tubes is used to produce a light for spectral analysis. Brightness of light depends on the nature of gas. Optimum intensity, line resolution and longer life. Metal ends with long life electrodes. About 26 cm long, with 90 -100 mm of central capillary. For intermittent use only, not to be used as a lamp source. These are designed to operate 30 seconds ON~30 seconds OFF. Need Spectrum Tube Power Supply or an Induction Coil, sold separately.
To study Spectral Lines of Pure Elements / Gases. Gas under pressure in the tubes is used to produce a light for spectral analysis. Brightness of light depends on the nature of gas. Optimum intensity, line resolution and longer life. Metal ends with long life electrodes. About 26 cm long, with 90 -100 mm of central capillary. For intermittent use only, not to be used as a lamp source. These are designed to operate 30 seconds ON~30 seconds OFF. Need Spectrum Tube Power Supply or an Induction Coil, sold separately.
A fine instrument for determining the results of curvature of spherical surfaces such as mirrors and lenses. Its micrometer screw is graduated to measure displacement as small as 0.01mm. The instrument has two brass plates and three steel legs. A flat glass plate is provided for support while taking precision readings.
A fine instrument for determining the results of curvature of spherical surfaces such as mirrors and lenses. Its micrometer screw is graduated to measure displacement as small as 0.01mm. The instrument has two brass plates and three steel legs. A flat glass plate is provided for support while taking precision readings.
Huge, metal construction. Baked shoving hammertone finish. Shows that pressure of a liquid depends on the depth/height.
Huge, metal construction. Baked shoving hammertone finish. Shows that pressure of a liquid depends on the depth/height.
Flexible stainless steel blade with rounded end, mounted in a polished wood handle.
8 inch flexible stainless steel blade with rounded end, mounted in a polished wood handle.
• Hi Viz Lime Class 2 ANSI Approved
• Light weight, cool vest with reflective silver stripes
OccuLux Economy Single Band Vest features the lowest priced ANSI Class 2 high quality vest on the market. Bright, lightweight polyester material. 2" 3M Scotchlite reflective tape. One 360° horizontal stripe plus two vertical shoulder stripes. Hook and loop closure. Machine washable. Please note, vests are sized to fit over work clothes. For a more comfortable looser fit, we suggest you buy the next size up.
Watch ants build rooms and dig tunnels. Unit comes complete with handbook, food, liquid feeder, supply of sand, and coupon for ants. 6" x 9".
Polypropylene covered for retrieving stirring bars from most liquids. Powerful magnet at one end, ring handle at the other end. 300mm length.
Polypropylene covered for retrieving stirring bars from most liquids. Powerful magnet at one end, ring handle at the other end. 300mm length.
Compare and contrast the physical properties of streak and color in this 8 specimen mineral collection. Numbered specimens are approximately 1 x 1.5". Streak plate and key sheet included. Grades 5-12. Ages 10-18. Ages 10-18.
Compare and contrast the physical properties of streak and color in this 8 specimen mineral collection. Numbered specimens are approximately 1 x 1.5". Streak plate and key sheet included. Grades 5-12. Ages 10-18. Ages 10-18.
• Perfect for the classroom, gym or playground
• Made of styrene to last
• Easily fits our cone top sign holders
• Set of 5 - 1-Way (right & left), RR Xing, No parking, crosswalk.
Set of 5 - 1-Way (right & left), RR Xing, No parking, crosswalk. Perfect for the classroom, gym or playground. Made of styrene to last. Easily fits our cone top sign holders.
• Perfect for the classroom, gym or playground
• Made of styrene to last
• Easily fits our cone top sign holders
• Set of 3 signs - 3 Direction Arrows
Set of 3 signs - 3 Direction Arrows Perfect for the classroom, gym or playground. Made of styrene to last. Easily fits our cone top sign holders.
• 12" high with 8.25" square base
• Made with 100% PVC polyvinyl chloride (contains no phthalates)
• Conical and top of base is one continuous layer
• Brilliant color with UV inhibitors for resistance to fading
• Good visibility under all weather condition
• Wide body design ensures stability
• Able to return to their original shape after impact
• Will not mar floors.
• Use as a traffic cone, or for hundreds of phys ed activities
• Available in 3 sizes
12" high with 8.25" square base
18" high with 10.75" square base
28" high with 14.5" square base
These cones are constructed of brilliant fluorescent orange vinyl. Non-porous, dirt-resistant surface can be easily cleaned. Will not mar floors. Virtually indestructible. Will collapse under pressure then spring back into shape. Easy stacking. Can be used for lane markers, crowd control, obstacle courses, boundary markers, marking danger areas, repair areas and driver training. Available in 6 Sizes.
This high visibility, 6-mil, pressure-sensitive tape conforms to OSHA marking requirements. Alternating stripe pattern available in a variety of colors. As an added feature, these self-wound printed tapes with permanent adhesive are protected with a clear overlamination. Made in the USA.
• Full 180 degree view with no distortion
• Made of polycarbonate
• Anti-scratch coating
• Anti-Fog treated lenses
• Silicone pads for perfect fit.
• Offer great vision and protection.
• Flow-through ventilation design minimizes fogging
• Size: Youth
Full 180 degree view with no distortion. Made of polycarbonate. Anti-scratch coating, fog-free lenses. Silicone pads for perfect fit. Offer great vision and protection. Unique flow-through ventilation design minimizes fogging.
Neodymium (NdFeB) is the most powerful magnet material in the world. Neodymium is classified as an element in the lanthanides section of the Periodic Table. These are the super strong magnets you have heard about that can attract through your hand.
Automatically turns on at 30 degrees, 60 degrees, or 90 degrees angles. Never needs calibration. 3 second update. Range: -50 degrees to 150 degrees Celsius
Easy wind-up tapes are marked in inches and feet on one side and mm and cm on the other. Has removeable handle for easy control. Durable casing for years of use.
Easy wind-up tapes are marked in inches and feet on one side and mm and cm on the other. Has removeable handle for easy control. Durable casing for years of use.
Our stethoscopes have adjustable, chrome plated binaurals, and PVC Y-tubing. Good quality, and economical.
Our stethoscopes have adjustable, chrome plated binaurals, and PVC Y-tubing. Good quality, and economical.
This expansion kit will allow teachers, parents, and students the opportunity to turn their original Teaching Tank into a small aquarium in about two minutes. With this wider tank, a whole new variety of experiments can now be completed.
• Build cranes
• Learn how cranes lift and load
• Experiment with different types of cranes and pulleys
• Original best selling series
• Little Labs
Build cranes and learn how they lift heavy loads at construction sites. Experiment with different types of cranes and pulleys. 16-page color guidebook.
Crystals are fascinating creations of natural beauty. Diamonds, gemstones, rose quartz, snowflakes, sugar grains, and table salt are all crystals. Grow your own crystals and explore these exquisitely ordered structures in a fun, creative way with six crafty experiments. This kit includes five different chemicals and other tools for growing crystals. Grow a crystal cloud inside a rainbow. Watch pink iridescent crystals form from a translucent solution. Grow long needle-shaped crystals. Mold plaster hearts and flowers and then grow a layer of pink crystals on them. Create the perfect solution to get crystals to form on a granite rock. A specially designed experiment station provides molds and growing basins for your crystal creations. After you have grown your crystals, store them safely in three clear, locking display boxes. Learn how and why crystals form, and tips and tricks for getting the biggest, most beautiful crystals. Full-color, 16-page experiment manual.
It’s time to have some yummy gummy fun with this awesome bubble gum making kit! Mix up your gum base and then sweeten it with sugar. Next, use the three included flavors to make your gum more delicious than ever. Choose from watermelon, orange, and classic bubble gum — or try them all! Finally, cut it up, package it, and label it with stickers to give away as gifts. While you make these yummy treats, you’ll also learn about the scientific properties of elastic materials. Food ingredients included.
Ages: 6+
Experiments: 5
Piece Count: 10
Manual Pages: 16
The design of the Spillnot uses the principles of Newtonian physics to keep the liquid in the container. The flexible handle and location of the suspension point above the center of the tray ensure that the forces on the liquid are always directed toward the supporting tray, even when the tray is in motion. Sideways forces usually responsible for spills are not transmitted to the tray by the flexible handle. Radial forces generated during swinging motion only force the liquid into the container more firmly. An inexpensive demonstration to intrigue students and challenge their analytical powers! Includes activity guide. 5" x 5" x 9". Weight: .25 lbs.
The design of the Spillnot uses the principles of Newtonian physics to keep the liquid in the container. The flexible handle and location of the suspension point above the center of the tray ensure that the forces on the liquid are always directed toward the supporting tray, even when the tray is in motion. Sideways forces usually responsible for spills are not transmitted to the tray by the flexible handle. Radial forces generated during swinging motion only force the liquid into the container more firmly. An inexpensive demonstration to intrigue students and challenge their analytical powers! Includes activity guide. 5" x 5" x 9". Weight: .25 lbs.
Excellent reference collections and a valuable aid in identifying and comparing common and rare rocks and minerals. These mounted collections display common minerals and igneous, sedimentary and metamorphic rocks. Specimens are 1/2"-1". Rocks and Minerals Study Guide included. Grades 5-12. Ages 10-18.