Uxcell 30ml Plastic Test Tubes with Cork Stoppers 5Pcs 150x20mm Tubes Lab Use Clear

Specifications: Color: Silver Material: Stainless Steel Model: 50 hole Hole Diameter: 13mm Fit for: 10-13mm tubes Size: 160x84x95mm / 6.3x3.3x3.74 inch (L*W*H) Package Contents: 1 x Tube Rack

This LED rotating windmill soldering kit electronics practice board is a teaching kit for people who want to improve the welding skills.An interesting DIY welding kit that can be used as a gift. Advantage : 1. The pcb board prototype kit is tinned not easy to oxidize high-strength fireproof anti-drop material can be disassembled and assembled repeatedly.Can improve the welding skills of electronic professionals and enthusiasts. 2.The 19 red LEDs are arranged in the shape of the wind turbine during rotation and remain stationary when not powered on. After being powered on 7 LEDs arranged like propellers are lit up each time and the three sets of LEDs are continuously lit up giving the visual effect of a windmill rotating. The speed of rotation can be adjusted through two buttons on the board. Instruction: 1. Please ensure that all components are in the correct direction and position; and check whether pseudo/float welding. 2.Since the accessories are very small it is recommended to use a pointed clip to assist welding. Note: 1.Please check compatibility before purchasing. 2.It is normal for the product color to differ from the image due to the luminous effect.

Learning Resources Ready Set Move fun exercise set takes active learning to a whole new level. Stand on the colored circle mats and roll the jumbo cubes to see which exercise to do-and how many times. Use this versatile activity set to create student groups or encourage student response as you roll the color cube and call on students. Includes 25 10 inch foam circle mats in 5 colors 3 inflatable 5 inch cubes depicting exercises colors numbers and activity guide. Ages 4 and up.

This is for one binoculars. This is a wonderful way to brighten up any swing set. The colors available are Green blue red yellow and pink.

GSC International 4-90975 Prism Acrylic Equilateral Prism 25mm face x 75mm length. Optically Clear. These prisms are made of optically-clear acrylic. They have an equilateral triangle shape and are boxed individually. Each side of the equilateral-triangle-face is 25mm. This prism is 75mm long. The equilateral prism serves as a practical and visual tool for teaching fundamental optics concepts helping students better grasp the behavior of light. The prism is most famously used to show how white light can be split into its component colors a phenomenon known as dispersion. When light passes through the prism it bends (refracts) due to the change in medium and different wavelengths of light bend by different amounts. This spreads the light out into a spectrum of colors demonstrating how visible light is composed of various wavelengths. The equal angles of an equilateral prism ensure that the light paths through it are predictable which simplifies the analysis of refraction and reflection in demonstrations. This makes it easier to teach concepts like angle of deviation and minimum deviation. The symmetry of the prism makes it easier to understand and calculate the bending of light at both the entry and exit points. This consistency helps reinforce the idea that the angle of refraction depends on the angle of incidence and the material’s refractive index. In advanced applications an equilateral prism is used in spectroscopy to analyze the spectral composition of light sources. This is important for learning about atomic and molecular energy levels. PRODUCT WARNINGS This product is NOT A TOY. It is designed for educational scientific or professional use only. Adult supervision is required at all times. Improper use may cause injury or damage. Always follow safety guidelines and wear appropriate protective equipment. Not suitable for children 15 and under.