Industrial & Scientific Store - Science Education Supplies

• Plano-Convex lens
• 50mm diameter
• 150mm focal length

• 3.15\" brush Length x .5\" Diameter
• 9\" total length
• Fan shaped bristle arrangement
• Stainless steel wire handle

• 75mm diameter
• 700mm focal length
• Free of chromatic abberation
• Made in india
• Good for planets and some deep sky objects

• A wonderful kit to understand the concept of Reflection, Refraction, Total Internal Reflection, Convergence, Divergence of light beam, Correction of Short- Sightedness (Myopia), Long-Sightedness (Hypermetropia) of Human Eye
• Correlation between theory and practical becomes easier
• The kit contains- Laser Ray box with 5 LED color light sources, Activity Cards-9, Teacher's Booklet, Acrylic Blocks-12

• 1\" Titanium density cube for element collections, standard size and density, exactly the density weight.
• Lab grade high purity material, almost the best purity you can get in market.
• Customer satisfaction guaranteed.

• High-quality 3 MIL lamination for added durability
• Tear Resistant
• Made in the USA
• Poster is 18\" x 24\" in size

• Series Arm: Four decade dials in steps of thousands, hundreds, tens, & units of Ohm's.
• Ratio Arm: The ratio arm of the bridge is capable of selecting multiplying factor of 0.001, 0.01, 0.1, 1, 10, 100, 1000 for resistance measurements.
• Two press keys are provided, one marked B is for battery & one marked G is for Galvanometer
• One toggle switch is provided for internal battery
• A sensitive galvanometer is provided in the bridge.

• 50mm Large Aperture: Zhizuka telescopes for astronomy has a 500mm (f/5.5) focal length and 50mm aperture.Its 50mm large aperture provides excellent light-gathering power, delivering sharp and bright images of celestial objects?even in low light conditions.Perfect telescope for astronomers to explore stars and moon.
• Great Telescope for Kids& Beginners! The telescope meets all the needs of astronomy beginners, the adults & kids astronomical journey begins from here! Equipped with 3X Barlow len and two eyepieces, 20mm and 12.5mm, you can get magnification of 18X to 28.8X. This is a great telescope for adults astronomy beginners.Whether it's viewing planets and stars, our telescope is the best helper for adults & kids.
• Adjustable Tripod: This telescope allows for many different viewing positions with a adjustable aluminum alloy tripod and a carry bag, the telescope and tripod can fit inside the bag for easy traveling and storage.
• Easy to Assemble and Use:The telescope is designed to be user-friendly , it can be set up quickly without additional tools.You can find a lot of fun in assembling and develop the child's hands-on and observation skills.It comes with a detailed illustrated manual for easy set up and use.It is the perfect gift for kids or astronomers.

• Color: Transparent; Material: Glass; Focal Length (Double Convex Lens):10cm; Focal Length (Double Concave Lens): 10cm; Diameter(Double Convex Lens):40mm / 1.54\"; Diameter(Double Concave Lens):40mm / 1.54\"; Packing List: 2 x Glass Lens
• Advantage: Made of quality glass that is durable, scratch resistant, and provides excellent optical performance. Round edges have been polished, it is not easy to hurt your hand when you assemble it. Designed with a double concave shape that let the light diffuse and produces virtual images. The double convex shape of the lens provides a wider field of view, resulting in clearer and sharper images. The lens is accurately measured and has consistent curvature.
• Concave Lens: Place the concave side of the lens facing the object from which you want to disperse the light. Adjust the distance between the object and the lens until the desired level of dispersal is achieved. Convex Lens:Once you have determined the focal length, position the lens in front of the light source. Move the lens back and forth until the image of the object is in focus on the screen or surface.
• Application: Double concave lenses are used to disperse light. The double convex lens is a type of lens that is thicker at the center than at the edges and is used to gather light. They can make telescopes, suitable for a variety of applications, including scientific experiments, photography, and optical instruments.
• Note: Double concave lenses are often used in combination with other lenses to create specific optical effects. Remember to handle the lens with care to avoid scratches or damage to the surface.

• Strong Practicability: Kids beginners astronomical telescope has theoretical resolution 2.800 arcseconds, 360mm focal length and 50mm aperture, maximum 90x Magnification, fully coated optical glass with high transmittance coating produces stunning bright and clear. Perfect telescopes for kids and astronomy beginners to explore landscapes, buildings and wild animals, star, moon etc.
• High Magnification Eyepiece: This astronomical telescope equipped with H20mm (view the details of the craters on the moon), H6mm (view the terrestial objects on land) and moonlight mirror. You can freely match the telescope multiples to observe objects at different distances and sizes. The telescope will help you and your child quickly locate distant objects during use to get a clear view.
• With Portable Tripod: Made of premium aluminum alloy, very durable, lightweight and portable, insuring long serving time. Kids refractor telescope comes with a tripod enables many different viewing positions, which provides a good environment to learning the nature and the universe for long term observation without making your hands tired.
• Easy To Install & Use: The professional astronomical refractor telescope installs itself without any tools,It can be adjusted 180 vertically and 360 horizontally. It's quick and easy to set up even for beginners, easy assembly with no tools required.
• Lightweight Portable: The portable travel telescope is specially designed for children and astronomy beginners, with a lightweight frame that is easy to carry on the go. Both binoculars and tripods fit in the bag for easy travel and stargazing on the go. So you can keep your kids company and help your little astronomer awaken their interest in exploring the universe.

• Powerful Optics: Refractor telescope features large 62mm aperture for bright, clear views of stars, planets and more.
• Versatile Accessories: Kit includes 25mm eyepiece,8mm eyepiece,rack and pinion focuser,lens holder and 90 degree diagoal.
• only 63mm pvc pipe is required to assemble. length of the pipe should be 55cm.
• focal length of objective is 700mm.
• Easy Assembly: Self-contained kit assembles effortlessly with all necessary parts included for night sky viewing within minutes.

• Outstanding Quality: Constructed from 99.6% pure zinc, renowned for its anti-corrosion properties.
• Matchless Precision: Sculpted with a dimensional tolerance of +/- 1 mm, ensuring its impeccable accuracy.
• Innovative Learning Tool: A hands-on way to explore elemental properties, making education a delightful experience.
• Sleek Design: Boasting a polished finish, it becomes a standout in any elemental collection.
• Enlightening Gift: Perfect for educators, science hobbyists, and collectors; additionally serves as an elegant paperweight or decorative piece.

• A small refracting type telescope with a larger diameter (50mm), accounting for little place
• Can set 60X, 18X, the mirror group plus 1.5X, 90X, 27X
• Equipped with two different magnification eyepieces and 1.5X multiplier mirrors, so that you can freely mix, observe different distances and sizes objects
• Suitable for beginners astronomy enthusiasts, especially a best gift for your children
• Do not view sun through telescope as serious injury to the eye will occur