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  • Optical Illusions: The Science of Visual Perception (Illusion Works)

    This intriguing collection contains more than 275 optical illusions that appear to change before your eyes. Al Seckel carefully selected both well-known images, such as Shepard's tabletop, Wade's spiral, Ames room and Rubin's face/vase, and many lesser-known, but no less effective, illusions. Every type of optical illusion is here, along with notes about the science of each visual perception and how the illusions work. Among the baffling images and shapes are: Figure/ground illusions, in which one shape switches into another then back again Ambiguous figures Impossible objects Trompe l'oeil Stereo illusions. With illusions rendered in photography, artwork and computer imaging, and a huge variety of themes and effects, Optical Illusions dazzles both the mind and the eye.

    • Brand: Firefly Books LTD
    • ASIN: 1554071518
    • Part No: 275 full colour illustrations

  • Collocation-Online Women Men Cat Eye Accessories Twin-Beams Pink Sun glasses,SJ1001C4,United States

    Dear buyer, welcom to the shop,wish you have a good time!Frame Color::Black Silver Gold Sunglasses Color C5::Black frame & Red mirror lens Style:Cat Eye Brand Name:Collocation-Online Lens Height:51mm(2.01inches) Sunglasses Color C3::Gold frame & Silver mirror lens Sunglasses Color C2::Gold frame & Pink mirror lens Gender:Women Lens Width:56mm(2.20inches) Department Name:Adult Sunglasses Color C1::Black frame & gray lens Item Type:Eyewear Lenses Optical Attribute:Anti-Reflective Sunglasses Function::UV400 Eyewear Type:Sunglasses Frame Material:Alloy Model Number:SJ1001 Sunglasses Color C4::Silver frame & Silver mirror lens Lens material::TAC Resin PC Lenses Material:Plastic Sunglasses Color C6::Black frame & Blue mirror lensIt will take us about 15 days to deliver the goods . We will send the goods to you as soon as possible. Please be patient and thank you for your understanding.

    • Color: Sj1001c4
    • Brand: Collocation-Online sunglasses
    • ASIN: B07G11SKN5

  • Rainbows, Halos and Glories

    Over 200 illustrations, many in full colour, capture for both the layman and scientist the beautiful optical effects that we see in the sky. The author describes and explains these effects in non-technical language.

    • ASIN: 0521388651

  • Edifier R1700BT Bluetooth Bookshelf Speakers - Active Near-Field Studio Monitors - Powered Speakers 2.0 Setup Wooden Enclosure - 66w RMS

    Quality Sound Versatile speakers will have you wanting to play every device off of them. Plug in your gaming console, computer or TV for exceptional sound quality. The R1700BT has built in Digital Signal Processing (DSP) and Dynamic Range Control (DRC) to prevent distortion Designed with a 19mm "Eagle Eye" dome tweeter, this bookshelf speaker creates uncanny sound. It brings a new meaning to clear sound. Fashioned with a 10-degree angle to direct the sound exactly at you, it creates a better listening experience as it reduces interference. The R17000BT is enclosed in hand picked walnut vinyl, for an elegant look. 4-inch bass driver in each speaker create rich lows and clear highs. With the front facing bass reflex port, low frequencies are emphasized giving the bass more power. Conveniently located dials on the side of the speaker allow complete control of audio, bass and treble. You can also alter your music from the ease of your couch with the wireless remote. Pair your smartphone to the chic bookshelf speaker through Bluetooth. With a touch of a button you can hear endless music from your R1700BT. Technical Specifications TOTAL POWER OUTPUT: RMS 15W × 2 + 18 W × 2SNR: ≥85dBAFREQUENCY RESPONSE: 60Hz-20KHz(±3db)TWEETER UNIT: Φ19mm silk domeFULL RANGE UNIT:
4" alloy,...

    • Color: Walnut
    • Brand: Edifier
    • ASIN: B016PATXSI
    • UPC: 875674001352
    • Part No: FBA_R1700BT

  • Edifier R1850DB Active Bookshelf Speakers with Bluetooth and Optical Input - 2.0 Studio Monitor Speaker - Built-in Amplifier with Subwoofer Line Out

    New Technology Familiar Design A familiar design meets new technology. Introducing the R1850DB 2.0 bookshelf speaker. Connect your any Bluetooth device and begin to experience an incredible sound from Edifier's astonishing speakers. Room-filling sound Producing 70 watts of balanced sound, Edifier's R1850DB are a stand out in both categories of style and sound. Its 4.5-inch midrange/woofer speaker drivers create rich lows. Meanwhile, the treble units produce clear highs. They are equipped with both Digital Signal Processing (DSP) and Dynamic Range Control (DRC) help limit and reduce distortion even at higher volumes. The built-in class D amplifier powers the speakers and eliminates the need for receivers or external amplifiers filling your desired room with sound. Angle Design Directs Sound Every aspect of Edifier's R1850DB is designed with purpose. The medium-density fiberboard [MDF] enclosure reduces distortion and minimises acoustic resonance. The base of the speaker is angled at 10 degrees incline. The design of the angle directs the sound from the woofers right to your ears. Comprehensive controls The R1850DB comes with a fully featured remote for the set of speakers. Adjust the volume, switch inputs, mute the speakers and control Bluetooth connected playback all from the rem...

    • Brand: Edifier
    • ASIN: B073W1R4XQ
    • UPC: 875674003295
    • Part No: edifier-r1850db-black

  • Edifier R1280DB Powered Bluetooth Bookshelf Speakers - Optical Input - Wireless Studio Monitors - 4 Inch Near Field Speaker - 42w RMS - Wood Grain

    Edifier's Classic Speakers Just Got BetterIt's time to take our best-selling speakers and provide a massive upgrade. Equipped with all new features of a modern powered speakers. New inputs include a new optical, coaxial and wireless Bluetooth inputs. Experience HD audio for the first time. Contemporary style VariantBlack wood look to keep the classic look with a new twist on the style of modern technology. Now your speakers can blend in well with your computer, television, record player or any other piece of technology. Side Panel ControlsUse the side panel knobs for adjusting the EQ to your liking. The controls are located on the active/powered speaker. Twist the knobs on the side control unit to fit for your own personal preference of sound. Change the volume by adjusting the knob on the active speaker. Full List of Inputs Newly added inputs such as optical and coaxial inputs upgrade our standard set of speakers into full HD set of bookshelf speakers. With the new additions, we have also left the RCA connections in tact for keeping the option for RCA or AUX connections. Many of our customers have relied on our RCA inputs and cables included. Also, achieve a wireless Bluetooth connection between you and your source like a phone or a laptop. Wireless RemoteThe newly included remo...

    • Color: Wood Grain
    • Brand: Edifier
    • ASIN: B0719C132V
    • UPC: 875674003066
    • Part No: R1280DB WOOD

  • Microsoft Wireless Optical Desktop 700 v2 - Keyboard and mouse set - wireless - RF - Canadian English

    Microsoft Wireless Optical Desktop 700 Keyboard and Mouse - USB Wireless RF Keyboard - USB Wireless RF Mouse - Optical - 800 dpi - 3 Button - QWERTY

  • Logitech Pro Gaming Mouse - Mouse - optical - 6 buttons - wired - USB

    The difference between winning and losing in today's games isn't measured in meters or seconds, but micrometers and milliseconds. when the stakes are at their highest, a single click can be the difference between going home with $5k or with $500k. that's why Logitech g created the pro gaming mouse. its lightweight body and optical gaming sensor are engineered for the unprecedented speed and precision aiming needed at the highest level of esport competition.Logitech g pro gaming mouse was inspired by the classic lines and simple construction of the Logitech g100 and g100s body made popular by top competitive esports professionals.consistent, pixel-precise accuracy makes a critical difference in high-stakes competitive gameplay. the pmw3366 delivers a level of precision widely considered to be the best by enthusiasts and professionals alike. with zero smoothing, filtering or acceleration across the entire dpi range (200-12,000 dpi), it provides exceptional tracking accuracy and consistent responsiveness at any speed.

  • Caseling Portable Hard Carrying Travel Storage Case for External USB, DVD, CD, Blu-ray Rewriter / Writer and Optical Drives - Black

    The Caseling External Optical Drive Hard case is a stylish case to protect external CD DVD Blu-Ray drives, hard drives, or other computer accessories. Easily fit Devices up to 6.5' inch x 6.5' inch x 1.8 inches or smaller. • Compatibility such as: Apple Superdrive, VersionTech, Samsung, Amazon Basic's, LG, Pioneer, Toshiba, Asus, Buffalo, HP, Sony, Liteon, Pioneer, Pawtec, Panasonic, Esky, Lenovo, Sanoxy and much more. ------------------------------------ - Caseling for Portable External USB DVD CD Blu-ray Rewriter / Writer and Optical Drives Hard Carrying Travel Storage Case Sleeve Bag. – Compatible With: Apple Superdrive, Lg, Samsung, Pioneer, Toshiba, Asus, Buffalo, Hp, Sony, Liteon, Pioneer, Pawtec, Panasonic, Esky, Lenovo, Sanoxy and Much More. - Black

  • OQBDR04LT-50 4X 25 GB BD-R Single Layer Blu-Ray Recordable Logo Top 50-Disc Spindle, Blu-ray discs are designed especially to store large HD video and audio files. By Optical Quantum

    The Blu-ray Disc series is on the cutting edge of technology using a blue-violet laser to record either high-definition (HD) video or high capacity gigabyte data files. Using 's exclusive FMS (Flexible Manufacturing System) and sophisticated production know-how brings next generation products like recordable Blu-ray discs to market in the shortest time frame with reasonable pricing. Viewers will especially enjoy High-Definition video programming using the Blu-ray Disc series.

  • Hard Clamshell Black Small Case for Small Frame, Glasses Case, Hard Shell Protects & Stores Sunglasses, Reading Eyeglasses and All Eyewear, Suitable for Men, Women & Kids, By Triumph Optical

    Triumph Optical takes pride in making quality products available on Walmart. This case is a hard clamshell case that is made for smaller frames. It is made of plastic and metal with a fine fauxleather finish. The inside of the case is made with a soft tan felt inner lining guaranteeing your frames are protected.

  • Razer Mamba Wireless Gaming Mouse: 16,000 DPS 5G Optical Sensor - Chroma RGB Lighting - 7 Programmable Buttons - Mechanical Switches - Up to 50 Hr Battery Life

    The Razer Mamba Wireless features our acclaimed Razer 5G Advanced Optical Sensor with true 16,000 DPI, and a battery life of up to 50 hours on a single charge. Enjoy great wireless performance with the Razer Mamba Wireless.

  • Hard Clamshell Blue Small Case for Small Frame, Glasses Case, Hard Shell Protects & Stores Sunglasses, Reading Eyeglasses and All Eyewear, Suitable for Men, Women & Kids, By Triumph Optical

    Triumph Optical takes pride in making quality products available on Walmart. This case a hard clamshell case that is made for smaller frames. It is made of plastic and metal with a fine fauxleather finish. The inside of the case is made with a soft tan felt inner lining guaranteeing your frames are protected.