ReviewsElectron Beam Demonstrator

SVBONY Telescope Filter 2 inches CLS Filter City Light Pollution Reduction Filter Broadband Filter Suitable for Deep Sky Visual Astronomical Photography

Electron beam gun evaporation with Ion-assisted deposition coating technology for durability and resistance to scratching.
as well as stability on CWL (central wavelength) no deviation affected by temperature change.
Planetary rotation system offers precision and homogeneity of coatings ensuring high value on transmission of pass band and Optical density of off-band.
90% transmission of main nebula emission lines.
specifically the major emission lines of artificial light pollution.
Suitable for color CCD cameras and unmodified DSLR Urban optical filter can effectively suppress urban harmful light and improve the contrast of shooting target.

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SVBONY Telescope Filter CLS EOS-C Clip-on Filter Compatible for Canon Broadband City Light Reduction Filter for CCD Cameras DSLR

Electron beam gun evaporation with Ion-assisted deposition coating technology for durability and resistance to scratching.
as well as stability on CWL (central wavelength) no deviation affected by temperature change.
Planetary rotation system offers precision and homogeneity of coatings ensuring high value on transmission of pass-band and Optical density of off band.
90% transmission of main nebula emission lines.
specifically the major emission lines of artificial light pollution.
Urban optical filter can effectively suppress urban harmful light and improve the contrast of shooting target.

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VILTROX 56mm F1.4 f/1.4 XF Autofocus APS-C Portrait Lens for Fuji Fujifilm X-Mount X-T3 X-T2 X-H1 X20 X-T30 X-T20

35mm equivalent F1.4 lens, Fully compatible with FUJIFILM X-Mount.
Focus range : Normal- 0.6m - ∞, Macro : 28cm - ∞, Focal length: f=23mm ,Max. magnification: 0.1x.
Seven round-edged aperture blades, which offer 22 stops in 1/3 EV steps.
Lens elements treated with Fujifilm’s multilayer HT-EBC (High Transmittance Electron Beam Coating).
1 lens group consisting of 3 cemented lens elements and 1 aspheric lens element.

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Organic Chemistry Model Kit (307 PCS) – Armyte Chemistry Molecular Model for Teacher Student and Young People Academic Chemistry Education, Pack with Atoms, Bonds, Electron Orbital (Colorful)

...rs or parents, you can teach your students or children about the complex molecular structure much easier than only picture in books!.
2. Most complete and precise Chemistry model: This sophisticated model contains 126 atoms including: Carbon, Nitrogen, Oxygen, Hydrogen, Sulfur, Chlorine, etc. Besides, it contains 30 electron cloud orbitals, 150 molecular bonds (single bond.
triple bond) and 1 bond-disassemble tool. With this kit, it’s very easy to make a benzene, ethylene, methane molecular by using ‘4-hole Carbon’ atom and ‘1-hole Hydrogen’ atom..
3. Excellent Electron Orbital Model Kits: Our product contains extra electron orbital model for advanced education in Chemistry. For example, you can assemble a Methane electron orbital model by using ‘5-hole Carbon’ atom and ‘1-hole Hydrogen’ atom. This is a difficult part and therefore, it’s an essential part for students and children..
4. Durable Model: PP (polypropylene) plastic Atoms have good durability, high gloss and well texture. LDPE (Low density polyethylene) plastic linking bonds have perfect durability and perfect bending property. The product can endure many years. Never worry about broken problem..

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Estes Gryphon Model Rocket with Glider| Fun Flying Model Rocket Kit to Build | Soars to 700'.

BUILD YOUR OWN ROCKET: Nothing compares to the thrill of building your own fully functional, FLYING model rocket. Great as a new favorite pass-time or for budding scientists and engineers, Estes rocket kits help kids and adults learn about high-flying space vehicles..
SKILL LEVEL: Rocketeers with at least one Beginner rocket under their belt will enjoy the extra challenge of building and finishing this Intermediate kit from scratch. Includes easy and user-friendly instructions to follow..
RECOMMENDED ENGINES (not included): A3-4T, 1/2 A3-2T, A10-3T.
PROJECTED ALTITUDE: 700 ft. (213 m) on a A10-3T.
ESTIMATED ASSEMBLY TIME: 2 hours (painting and glue drying time not included).LAUNCH SYSTEM: The Gryphon is compatible with the Porta-Pad II Launch Pad and Electron Beam Launch Controller, or any launch system that can support a 1/8 in. launch rod..AGES: For boys and girls ages 10+ with adult supervision for those under 12, and rocketeers of all ages..

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WordPress For Beginners: Tips and Tricks to Build a WordPress Website Fast without Coding

Build and launch your own high-flying model rocket! There's no thrill quite like launching a model rocket, watching it Streak Skyward, reach Peak altitude, and then return gently to earth. When you build them, the thrill is even better. Thanks to Estes model rocketry, kids can explore the wondrous world of science while experimenting with different combinations of rockets, engines and accessories to better understand how rockets reach outer space..
SKILL LEVEL: The Generic E2X is an easy-to-assemble Beginner level rocket with pre-colored parts..
RECOMMENDED ENGINES (not included): 1/2A6-2, A8-3, A8-5, B4-4, B6-4, B6-6, C6-5, C6-7.
Projected altitude: 1100 ft. (335 m) on a c6-7.
Estimated assembly time: 1 hour (glue drying time Not included).Launch system: compatible with the porta-pad II launch pad and electron beam launch controller, or any launch system that can support a 1/8 inch launch rod..Ages: For boys and girls ages 10+ with adult supervision for those under 12, and rocketeers of all ages..

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Baby Puzzles for Toddlers Fun - Building blocks educational game for Kids to learn and enjoy!

Build and launch your own high-flying model rocket! There's no thrill quite like launching a model rocket, watching it Streak Skyward, reach Peak altitude, and then return gently to earth. When you build them, the thrill is even better. Thanks to Estes model rocketry, kids can explore the wondrous world of science while experimenting with different combinations of rockets, engines and accessories to better understand how rockets reach outer space..
SKILL LEVEL: The Generic E2X is an easy-to-assemble Beginner level rocket with pre-colored parts..
RECOMMENDED ENGINES (not included): 1/2A6-2, A8-3, A8-5, B4-4, B6-4, B6-6, C6-5, C6-7.
Projected altitude: 1100 ft. (335 m) on a c6-7.
Estimated assembly time: 1 hour (glue drying time Not included).Launch system: compatible with the porta-pad II launch pad and electron beam launch controller, or any launch system that can support a 1/8 inch launch rod..Ages: For boys and girls ages 10+ with adult supervision for those under 12, and rocketeers of all ages..

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Estes Alpha Flying Model Rocket | Build Your Own Rocket Kit | Soars up to 1000 ft. | Fun Unplugged Family Activity | Great for Hobbyists and Kids 10+

Build your own rocket: Nothing compares to the thrill of building your own fully functional, flying model rocket. Great as a new favorite pass-time or for budding scientists and engineers, Estes Rocket kits help kids and adults learn about high-flying space vehicles..
Skill level: The Alpha is an intermediate level rocket which will help a budding Rocketeer develop some basic model building and finishing skills..
Recommended engines (not included): 1/2a6-2, a8-3, a8-5, b4-4, b6-4, b6-6, c6-5, c6-7.
Projected altitude: 1000 ft. (305 m) on a c6-7.
Estimated assembly time: 1 hour (glue drying time Not included).
Launch system: compatible with the porta-pad II launch pad and electron beam launch controller, or any launch system that can support a 1/8 inch launch rod..
Ages: For boys and girls ages 10+ with adult supervision for those under 12, and rocketeers of all ages..

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Lamy Vista Fountain Pen Demonstrator, Clear Broad Nib (L12B)

Made of ABS Demonstrator Clear coloured plastic body.
Accepts Z24 cartridge converter, sold separately..

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TWSBI ECO Fountain Pen Clear Stub1.1 Nib

Pen cap is able to post onto the back of the pen.
Comes in EF, F, M, B, or stub1.1 nib size choices..
Inner cap to insure a perfect seal when pen is capped.

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TWSBI ECO Fountain Pen Black F Nib

Pen cap is able to post onto the back of the pen.
Comes in EF, F, M, B, or stub1.1 nib size choices..
Inner cap to insure a perfect seal when pen is capped.

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