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If you're outside of Ohio, you can go ahead and order now without being taxed. Then, go ahead and email us your certificate so we can mark your account. If we expand in the future, we may eventually charge taxes in your state.

Nonlinear photonic crystals are usually used as quasi-phase-matching materials. They can be one-dimensional, two-dimensional or three-dimensional.

A sturdy, reliable Class IIIA (now Class 3R) <5mW Red Laser Pointer for the classroom or boardroom! Comes with a plastic and foam case for secure storage. This is the most visible red laser pointer you can legally own, so it's great for classroom demonstrations.

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A report issued by NIST (the National Institute of Standards and Technology) found that 90% of the green laser pointers on the market tested out of compliance with FDA Safety Regulations.

Class IIIA laser pointers (<5 mW rating) should normally be handled by adults. They can damage a person's retina if pointed directly at the eye for many seconds to minutes, but our natural "look away" reflex usually prevents any damage by keeping exposure short.

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B Freitag · 2005 · 160 — Here we present an alternative and successful method to eliminate the chromatic blur, which consists of monochromating the TEM beam.

The closest focusing distance is often thought of as the distance from the front of the lens to the subject. However, it is actually measured from the focal ...

Aberrational (Somali) Translated to English as aberrational · aberrational in more languages · Languages We Translate · Popular Language Pairs · Our Translation ...

Dimar 107R4-5M 5mm Diameter, Carbide Tipped, Straight Bit, 2 Flute, 1/4" Shank, 2" Length.

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The objective lens in a microscope captures and refracts the light reflected from an object, even a tiny object suspended in a drop of water.

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We only automatically charge tax to shipping addresses in Ohio. If you're in Ohio, please email us your tax exempt certificate with purchasing email you'll use. We will keep it on file and mark your purchasing email as tax exempt. Then you can place your order normally without being charged taxes.

We'll need to set up a custom order for you and mark it for payment due later. Please email us to receive a quote that includes shipping and taxes. Then, email us your PO. After shipping, we'll email you the invoice with payment details. Please note that if we do not have an existing relationship with your institution, we may require payment before shipping to reduce our risk of fraudulent orders.

With your purchase, you’ll join a community of proactive merchants and customers dedicated to a sustainable future. Together, we've removed emissions for over 45 million deliveries and removed over 31 thousand tonnes of carbon.

Classic pen-size red laser pointer Output power: <5mW Class IIIA laser Wavelength: 630nm-680nm Dimensions: 5 1/2″ X 3/8″ dia. Batteries: 2 AAA Reusable plastic case

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We recommend our LaserBlox, which are specially designed for classroom demonstrations and experiments. They won't roll, can be stuck on a white board, and can be stacked magnetically for ray experiments.

Our Class II (<1 mW) laser pointers (our "Super Safe" line) are preferred by schools and teachers, especially when kids will be handling them. These are considered safe by the FDA as long as they are not pointed directly in the retina for prolonged periods of time.

We offer discounts on most products for orders of more than 10 of any one item. Another price decrease is available at 25 pieces - typically what's needed for a classroom. If you are interested in those quantities, please email us and include your item and quantity details for a quote.

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Green is the most visible, red is the safest around kids, and violet lets you experiment with fluorescent materials. They each have their use, so consider getting one of each!

My old one I used when I taught gave up the ghost after 15 years. I have since retired from teaching, but the cat loves chasing the red dot. She gets tired before we do.

Precision linear actuator · KV™. The KV™ micro linear stage is a lead-screw-driven step motor stage with a miniature size. wdt_ID, Travel, 25 - 200 mm. 1 ...

2022516 — The design could focus nearly 98 percent of the rays generated by the lamps, producing a beam that could be seen more than 32 kilometers away.

We can add custom engraving of your brand or name to any of our laser pointers with a minimum order of 50 pieces. Contact us here for more information.

Every delivery’s carbon footprint is calculated based on weight, shipping method, and distance traveled. We neutralize these emissions by purchasing verified carbon removal credits from groundbreaking projects.