4815 products were found matching your search for observation in 9 shops:

A daily glass of wine prolongs life―yet alcohol can cause life-threatening cancer. Some say raising the minimum wage will decrease inequality while others say it increases unemployment. Scientists once confidently claimed that hormone replacement therapy reduced the risk of heart disease but now they equally confidently claim it raises that risk. What should we make of this endless barrage of conflicting claims? Observation and Experiment is an introduction to causal inference by one of the field’s leading scholars. An award-winning professor at Wharton, Paul Rosenbaum explains key concepts and methods through lively examples that make abstract principles accessible. He draws his examples from clinical medicine, economics, public health, epidemiology, clinical psychology, and psychiatry to explain how randomized control trials are conceived and designed, how they differ from observational studies, and what techniques are available to mitigate their bias.“Carefully and precisely written...reflecting superb statistical understanding, all communicated with the skill of a master teacher.”―Stephen M. Stigler, author of The Seven Pillars of Statistical Wisdom“An excellent introduction...Well-written and thoughtful...from one of causal inference’s noted experts.”―Journal of the American Statistical Association“Rosenbaum is a gifted expositor...an outstanding introduction to the topic for anyone who is interested in understanding the basic ideas and approaches to causal inference.”―Psychometrika“A very valuable contribution...Highly recommended.”―International Statistical Review

A digital copy of "Observations and Predictions of Eclipse Times by Early Astronomers" by John M. Steele. Download is immediately available upon purchase!

Provide The Perfect Place To Record Scientific Observations Of Plant Growth This journal guides students through basic plant research, giving them a place to record observations of what happens before, during, and after planting. Includes space for 10 weeks of observations and a plant growth line graph. 24 self-covered journals * Size: 8 3/8 " by 5 3/8 " * 16 pages each 164367 Plant Observation Journals life cycle flower seed science plant 164367 Plant Observation Journals life cycle flower seed science plant

Explore the outdoor experience of discovering, making a home for, and observing critters that swim, crawl, and fly, anywhere, anytime! Collect real or pretend insects, butterflies, frogs, and more with tweezers and a scooper and pop them in the durable plastic terrarium with lid and carrying handle. Use the magnifying cap and six double-sided ID cards to observe them in their new home! The terrarium has a removable base and a double-sided background card and can be filled with water, sand, or dirt. Enhance pretend play for kids four and older with two plastic critters (ladybug and lizard) to catch and observe. Lets Explore encourages kids to connect with the natural world through imaginative play! Discover the joy of outdoor adventures that instill curiosity and confidence while inspiring kids to say, "Lets Explore"! Details Collect, make a home for, and observe real or pretend critters that swim, crawl, and fly with this 16-piece terrarium play set Terrarium includes lid with snap-on magnifier, built-in handle with clips to hold ID cards and tools, removable molded base, double-sided background card; can hold water, dirt, or sand Play set includes scooper and tweezers for critter collecting, 2 play critters to encourage imaginative play, 6 double-sided ID cards, collectible medallion Lets Explore by Melissa & Doug encourages kids to connect with the natural world through imaginative play, and to discover the joy of outdoor adventures that instill curiosity and confidence while inspiring them to say, "Lets Explore"! Makes a great gift for ages 4- to 7-year-olds, for hands-on, screen-free play Ages 4+ Do not look directly at the sun with magnifier Do not leave the magnifier in direct sunlight WARNING: Choking Hazard - Small parts. Not for children under 3 yrs. Remove all packages before giving the product to a child Outdoor Outdoor Learning Camp Camping Melissa & Doug Play Set Explore Terrarium Imaginative play

Be captivated by the cosmos with the Vespera Observation Station with Tripod, an innovative fusion of a high-tech telescope and a state-of-the-art camera. This revolutionary device is set to redefine your astronomy experience, replacing traditional eyepieces with a user-friendly mobile app that brings the universe to your fingertips. As the world's lightest observation station, Vespera weighs less than 11lbs (5kg) and stands at a compact 15in tall (40cm). Its portable design makes it an ideal companion for explorers and stargazers, allowing you to marvel at the celestial wonders under your favorite night skies, no matter where you are in the world. Despite its small size, Vespera is packed with powerful features. It's equipped with a Full HD Sony IMX462 Sensor (1920x1080), one of Sony's latest sensors designed for exceptional low-light performance. This back-illuminated CMOS sensor offers a 1/2.8 format and a 2.9um pixel size, ensuring optimal heat management and fewer artifacts in your images. Vespera's Quadruplet Apochromatic Refractor is a testament to Vaonis' commitment to precision and quality. This dedicated quadruplet lens of 50mm, formed by two groups of two lenses made from lanthanum glass, offers an accurate and powerful optical design with no distortion, chromatic aberration, or astigmatism. Setting up Vespera is a breeze. Simply adjust the tripod legs, press the button, and let Vespera calibrate itself using Star Field Recognition technology. Within just 5 minutes, you're ready to explore the cosmos. Select your celestial target using the app, and Vespera will point and track it for you. Vespera is also the first of its kind to offer autofocus, ensuring sharp, perfect images every time. It's water-resistant, so you don't have to worry about leaving it outside. Plus, its multi-user mode allows you to share your stargazing experience with up to 5 devices. The Singularity app, available on iOS and Android, is your personal guide to the stars. With over 300 educational sheets, personalized recommendations based on your geolocation and the astronomical calendar, and a 'Plan my night' feature, exploring the universe has never been easier or more exciting. Experience the universe like never before with the Vespera Observation Station with Tripod, your gateway to the stars.

Be captivated by the cosmos with the Vespera Observation Station with Tripod, an innovative fusion of a high-tech telescope and a state-of-the-art camera. This revolutionary device is set to redefine your astronomy experience, replacing traditional eyepieces with a user-friendly mobile app that brings the universe to your fingertips. As the world's lightest observation station, Vespera weighs less than 11lbs (5kg) and stands at a compact 15in tall (40cm). Its portable design makes it an ideal companion for explorers and stargazers, allowing you to marvel at the celestial wonders under your favorite night skies, no matter where you are in the world. Despite its small size, Vespera is packed with powerful features. It's equipped with a Full HD Sony IMX462 Sensor (1920x1080), one of Sony's latest sensors designed for exceptional low-light performance. This back-illuminated CMOS sensor offers a 1/2.8 format and a 2.9um pixel size, ensuring optimal heat management and fewer artifacts in your images. Vespera's Quadruplet Apochromatic Refractor is a testament to Vaonis' commitment to precision and quality. This dedicated quadruplet lens of 50mm, formed by two groups of two lenses made from lanthanum glass, offers an accurate and powerful optical design with no distortion, chromatic aberration, or astigmatism. Setting up Vespera is a breeze. Simply adjust the tripod legs, press the button, and let Vespera calibrate itself using Star Field Recognition technology. Within just 5 minutes, you're ready to explore the cosmos. Select your celestial target using the app, and Vespera will point and track it for you. Vespera is also the first of its kind to offer autofocus, ensuring sharp, perfect images every time. It's water-resistant, so you don't have to worry about leaving it outside. Plus, its multi-user mode allows you to share your stargazing experience with up to 5 devices. The Singularity app, available on iOS and Android, is your personal guide to the stars. With over 300 educational sheets, personalized recommendations based on your geolocation and the astronomical calendar, and a 'Plan my night' feature, exploring the universe has never been easier or more exciting. Experience the universe like never before with the Vespera Observation Station with Tripod, your gateway to the stars.

Be captivated by the cosmos with the Vespera Observation Station with Tripod, an innovative fusion of a high-tech telescope and a state-of-the-art camera. This revolutionary device is set to redefine your astronomy experience, replacing traditional eyepieces with a user-friendly mobile app that brings the universe to your fingertips. As the world's lightest observation station, Vespera weighs less than 11lbs (5kg) and stands at a compact 15in tall (40cm). Its portable design makes it an ideal companion for explorers and stargazers, allowing you to marvel at the celestial wonders under your favorite night skies, no matter where you are in the world. Despite its small size, Vespera is packed with powerful features. It's equipped with a Full HD Sony IMX462 Sensor (1920x1080), one of Sony's latest sensors designed for exceptional low-light performance. This back-illuminated CMOS sensor offers a 1/2.8 format and a 2.9um pixel size, ensuring optimal heat management and fewer artifacts in your images. Vespera's Quadruplet Apochromatic Refractor is a testament to Vaonis' commitment to precision and quality. This dedicated quadruplet lens of 50mm, formed by two groups of two lenses made from lanthanum glass, offers an accurate and powerful optical design with no distortion, chromatic aberration, or astigmatism. Setting up Vespera is a breeze. Simply adjust the tripod legs, press the button, and let Vespera calibrate itself using Star Field Recognition technology. Within just 5 minutes, you're ready to explore the cosmos. Select your celestial target using the app, and Vespera will point and track it for you. Vespera is also the first of its kind to offer autofocus, ensuring sharp, perfect images every time. It's water-resistant, so you don't have to worry about leaving it outside. Plus, its multi-user mode allows you to share your stargazing experience with up to 5 devices. The Singularity app, available on iOS and Android, is your personal guide to the stars. With over 300 educational sheets, personalized recommendations based on your geolocation and the astronomical calendar, and a 'Plan my night' feature, exploring the universe has never been easier or more exciting. Experience the universe like never before with the Vespera Observation Station with Tripod, your gateway to the stars.

From the pioneers of smart telescopes comes the Vespera II Observation Station with Adjustable Tripod, a revolutionary blend of telescope and camera designed to make your celestial exploration effortless and engaging. This ultra-light, fully automated device is the next step in our journey to bring the cosmos closer to you, wherever you are in the world.The Vespera II Observation Station is not just a telescope; it's a gateway to the universe. With its advanced technology, you can capture the crisp, detailed beauty of celestial bodies right on your mobile device. Whether you're a budding astrophotographer or a seasoned stargazer, Vespera II lets you delve deeper into the cosmos, learn about its wonders, and share your discoveries with loved ones.The Vespera II is designed for portability and ease of use. Its ultra-light design means you can take it with you on all your adventures, bringing the universe to your fingertips wherever you go. With just a single button, you're one step away from connecting with the stars. No complicated setup, no time wasted - just set up the adjustable tripod, press the button, and let Vespera II do the rest.Our redesigned observation experience takes collaboration to a new level. With the ability to connect up to five devices simultaneously, you can share the magic of the night sky with your family and friends. The Vespera II Observation Station comes with a user-friendly mobile app that serves as your personal guide to the stars. This intuitive app offers personalized recommendations based on your geolocation, giving you a tailored stargazing experience.The Vespera II is equipped with cutting-edge features like Go-to Technology for automatic tracking of any stellar object, compensating for the Earth's rotation. Its Star Field Recognition technology allows it to calibrate itself, saving you precious observation time. The device is also water-resistant, with an auto-off feature for rainy conditions.Unique to Vespera II is the world's first auto-focus feature on an astronomical object, eliminating the need for manual adjustments. The auto-initialization feature uses your mobile's GPS, star pattern recognition, and astrometry to calibrate the device in less than five minutes.In summary, the Vespera II Observation Station with Adjustable Tripod is more than just a telescope - it's your personal window to the universe, designed to make your stargazing experience as easy, collaborative, and enriching as possible.

If you're an astronomy enthusiast or an aspiring astrophotographer looking to capture the magnificence of the cosmos with ease and sophistication, the Vespera II Observation Station with Dust Cover is your gateway to the stars. This innovative observation station represents the pinnacle of high-tech astronomy equipment, combining the functionality of a telescope and the convenience of a camera into one advanced, stylish device.The Vespera II is designed for seamless sky exploration, offering a large 2" (50mm) aperture that significantly enhances light gathering capabilities, resulting in clearer, more detailed images of celestial objects. Crafted by Vaonis, a brand synonymous with quality optical instruments, this observation station stands out for its precision engineering and superior performance.With its ultra-lightweight build, the Vespera II is the perfect travel companion for stargazers and adventurers alike, enabling you to experience the universe's wonders from any location. Its user-friendly interface simplifies your journey to the stars to a single button press, connecting you to the cosmos without the complexity often associated with traditional telescopes.The collaborative aspect of the Vespera II is truly remarkable. It allows you to share the night sky with friends and family through a super user-friendly app, eliminating the need for an eyepiece and creating a shared experience of discovery. The app's stacking process lets you witness and photograph the birth of stars in real-time, adding a new dimension to your astrophotography pursuits.Setting up the Vespera II is a breeze, thanks to its tripod with adjustable legs and the revolutionary Star Field Recognition technology that calibrates the device automatically. This means more time spent marveling at the night sky and less time on installation.Equipped with Go-to Technology, the Vespera II not only points you to any stellar object but also tracks it across the sky, compensating for Earth's rotation. This feature ensures that your celestial subjects remain in view, allowing for uninterrupted observation and photography.Durability is also a key feature of the Vespera II, with its water-resistant design that intelligently powers down in the event of rain. The world's first auto-focus feature for astronomical objects is integrated into the device, providing sharp, clear images without the need for manual adjustments.Auto-initialization is another standout feature, utilizing your mobile's GPS, star pattern recognition, and astrometry to prepare the Vespera II for use in under five minutes. You can connect up to five devices simultaneously, making it an ideal choice for group activities and educational settings.The accompanying mobile app, Singularity, is your personal guide to the cosmos. It operates across all devices, offering an intuitive and user-friendly interface that grants you access to any stellar object in the catalog. Personalized recommendations based on your geolocation...

If you're an astronomy enthusiast or an aspiring astrophotographer looking to capture the magnificence of the cosmos with ease and sophistication, the Vespera II Observation Station with Dust Cover is your gateway to the stars. This innovative observation station represents the pinnacle of high-tech astronomy equipment, combining the functionality of a telescope and the convenience of a camera into one advanced, stylish device.The Vespera II is designed for seamless sky exploration, offering a large 2" (50mm) aperture that significantly enhances light gathering capabilities, resulting in clearer, more detailed images of celestial objects. Crafted by Vaonis, a brand synonymous with quality optical instruments, this observation station stands out for its precision engineering and superior performance.With its ultra-lightweight build, the Vespera II is the perfect travel companion for stargazers and adventurers alike, enabling you to experience the universe's wonders from any location. Its user-friendly interface simplifies your journey to the stars to a single button press, connecting you to the cosmos without the complexity often associated with traditional telescopes.The collaborative aspect of the Vespera II is truly remarkable. It allows you to share the night sky with friends and family through a super user-friendly app, eliminating the need for an eyepiece and creating a shared experience of discovery. The app's stacking process lets you witness and photograph the birth of stars in real-time, adding a new dimension to your astrophotography pursuits.Setting up the Vespera II is a breeze, thanks to its tripod with adjustable legs and the revolutionary Star Field Recognition technology that calibrates the device automatically. This means more time spent marveling at the night sky and less time on installation.Equipped with Go-to Technology, the Vespera II not only points you to any stellar object but also tracks it across the sky, compensating for Earth's rotation. This feature ensures that your celestial subjects remain in view, allowing for uninterrupted observation and photography.Durability is also a key feature of the Vespera II, with its water-resistant design that intelligently powers down in the event of rain. The world's first auto-focus feature for astronomical objects is integrated into the device, providing sharp, clear images without the need for manual adjustments.Auto-initialization is another standout feature, utilizing your mobile's GPS, star pattern recognition, and astrometry to prepare the Vespera II for use in under five minutes. You can connect up to five devices simultaneously, making it an ideal choice for group activities and educational settings.The accompanying mobile app, Singularity, is your personal guide to the cosmos. It operates across all devices, offering an intuitive and user-friendly interface that grants you access to any stellar object in the catalog. Personalized recommendations based on your geolocation...

Discover the exceptional capabilities of the Newcon Optik BIG EYE 28x100ED, a versatile and powerful observation binocular designed to meet the most stringent specifications. Engineered to withstand harsh maritime weather conditions, this high-quality binocular is an ideal choice for marine use, border surveillance, or any application requiring long-range viewing.The BIG EYE 28x100ED boasts an impressive 28x magnification and a large 100mm objective lens diameter, allowing for a brighter, clearer image with more light intake. Its BAK-6 roof prisms and precision-ground, multi-coated optics ensure extraordinary optical quality, delivering true edge-to-edge image clarity.This durable binocular features oversized, individually focusing ocular lenses set at an angle for comfortable viewing. The foldable eyecups add to the ease of use, making it a reliable choice for extended observation sessions. The mounted device offers a full 360-degree horizontal swivel and a 135-degree vertical tilt, providing a comprehensive field of view.Nitrogen-filled to prevent fogging, the BIG EYE 28x100ED is designed for optimal performance in all weather conditions. It comes with a secure, lock-equipped hard case for safe storage and transport. For enhanced versatility, it can be coupled with one or two NVS 14 series night vision monoculars for night operations.Experience the power and precision of the Newcon Optik BIG EYE 28x100ED, a superior choice for those seeking a high-performance, weather-proof observation binocular.

Discover the exceptional capabilities of the Newcon Optik BIG EYE 28x100ED, a versatile and powerful observation binocular designed to meet the most stringent specifications. Engineered to withstand harsh maritime weather conditions, this high-quality binocular is an ideal choice for marine use, border surveillance, or any application requiring long-range viewing.The BIG EYE 28x100ED boasts an impressive 28x magnification and a large 100mm objective lens diameter, allowing for a brighter, clearer image with more light intake. Its BAK-6 roof prisms and precision-ground, multi-coated optics ensure extraordinary optical quality, delivering true edge-to-edge image clarity.This durable binocular features oversized, individually focusing ocular lenses set at an angle for comfortable viewing. The foldable eyecups add to the ease of use, making it a reliable choice for extended observation sessions. The mounted device offers a full 360-degree horizontal swivel and a 135-degree vertical tilt, providing a comprehensive field of view.Nitrogen-filled to prevent fogging, the BIG EYE 28x100ED is designed for optimal performance in all weather conditions. It comes with a secure, lock-equipped hard case for safe storage and transport. For enhanced versatility, it can be coupled with one or two NVS 14 series night vision monoculars for night operations.Experience the power and precision of the Newcon Optik BIG EYE 28x100ED, a superior choice for those seeking a high-performance, weather-proof observation binocular.

Buyers Products Rear Observation System with Night Vision Backup Camera is designed to improve rear-view visibility and obstacle observation. The system automatically turns on when you shift into Reverse, making it easy and convenient to use. The camera has heated night vision and an audio feed. The 7 in. full color monitor displays at an 800 x 480 resolution and comes with multiple mounts to suit many applications. There's also a wireless remote for easy operation in or out of your vehicle and a 65 ft. cable included. The durable camera is rated IP69K for extreme water and dust resistance. The system is backed with a 2-year warranty.

If you're an astronomy enthusiast or an aspiring astrophotographer looking to capture the magnificence of the cosmos with ease and sophistication, the Vespera II Observation Station with Dust Cover is your gateway to the stars. This innovative observation station represents the pinnacle of high-tech astronomy equipment, combining the functionality of a telescope and the convenience of a camera into one advanced, stylish device.The Vespera II is designed for seamless sky exploration, offering a large 2" (50mm) aperture that significantly enhances light gathering capabilities, resulting in clearer, more detailed images of celestial objects. Crafted by Vaonis, a brand synonymous with quality optical instruments, this observation station stands out for its precision engineering and superior performance.With its ultra-lightweight build, the Vespera II is the perfect travel companion for stargazers and adventurers alike, enabling you to experience the universe's wonders from any location. Its user-friendly interface simplifies your journey to the stars to a single button press, connecting you to the cosmos without the complexity often associated with traditional telescopes.The collaborative aspect of the Vespera II is truly remarkable. It allows you to share the night sky with friends and family through a super user-friendly app, eliminating the need for an eyepiece and creating a shared experience of discovery. The app's stacking process lets you witness and photograph the birth of stars in real-time, adding a new dimension to your astrophotography pursuits.Setting up the Vespera II is a breeze, thanks to its tripod with adjustable legs and the revolutionary Star Field Recognition technology that calibrates the device automatically. This means more time spent marveling at the night sky and less time on installation.Equipped with Go-to Technology, the Vespera II not only points you to any stellar object but also tracks it across the sky, compensating for Earth's rotation. This feature ensures that your celestial subjects remain in view, allowing for uninterrupted observation and photography.Durability is also a key feature of the Vespera II, with its water-resistant design that intelligently powers down in the event of rain. The world's first auto-focus feature for astronomical objects is integrated into the device, providing sharp, clear images without the need for manual adjustments.Auto-initialization is another standout feature, utilizing your mobile's GPS, star pattern recognition, and astrometry to prepare the Vespera II for use in under five minutes. You can connect up to five devices simultaneously, making it an ideal choice for group activities and educational settings.The accompanying mobile app, Singularity, is your personal guide to the cosmos. It operates across all devices, offering an intuitive and user-friendly interface that grants you access to any stellar object in the catalog. Personalized recommendations based on your geolocation...

VEVOR Tree Climbing Spikes, 3 in 1 Alloy Steel Adjustable Pole Climbing Spurs, w/ Security Harness and Lanyard, Arborist Equipment for Climbers, Logging, Hunting Observation, Fruit PickingPointed ClawsAlloy Steel StructureSturdy StrapsUser-friendly DesignComplete SetWide ApplicationLoad-bearing Capacity: 220 lbs/100 kg,Straps Material: Cowhide Leather,Foot Pedal Width: 4.3 in/ 11 cm,Model: SS-SDC-0005,Product Weight: 9.9 lbs/4.5 kg,Frame Material: Alloy Steel,Height: 15.7"-19"/40-48 cm

A marvel of modern astronomy, the STELLINA Observation Station and Hybrid Telescope with Gitzo Systematic Short Tripod offers an unparalleled stargazing experience. This sleek, high-tech device is designed to bring the wonders of the universe closer to you, making celestial exploration accessible and enjoyable for everyone.Engineered by the renowned brand Vaonis, STELLINA is a fusion of a high-performance telescope and a state-of-the-art camera. It's equipped with a SONY sensor, known for its exceptional sensitivity in low light, enabling you to capture stunning, ultra-HD images of galaxies, nebulae, star clusters, and even the moon. The device's advanced image processing algorithms, developed by experts from the world's largest astronomical observatories, ensure that every detail and color of the cosmos is beautifully revealed.STELLINA's user-friendly design and smart automation allow you to set up and start your cosmic journey in less than five minutes. With the accompanying Stellinapp, you can choose your next celestial destination from a catalog of over a hundred objects. The app also provides educational content about the stars and the universe, making your stargazing experience not just entertaining but also enlightening.Sharing your astronomical discoveries has never been easier. STELLINA supports multi-user mode, allowing you to connect up to 20 mobile devices to your station. You can then share your ultra-HD photos of the universe on your favorite social networks, bringing the beauty of the cosmos to your friends and family.The STELLINA Observation Station comes with a Gitzo Systematic Short Tripod, a product of Gitzo's high-end collection known for its stability and robustness. Hand-assembled in Italy, this tripod is made with lightweight, high-strength aluminum alloys, ensuring the perfect balance of portability and durability.In summary, the STELLINA Observation Station and Hybrid Telescope with Gitzo Systematic Short Tripod is a stylish, durable, and high-tech device that offers an easy, enjoyable, and educational way to explore and capture the beauty of the universe.

Buyers Products Rear Observation System with License Plate Camera is designed to improve rear-view visibility and obstacle observation. The system's night vision camera features a 120°. viewing angle and mounts to your license plate for a clean, subtle look. The 7 in. full color monitor displays at an 800 x 480 resolution and comes with multiple mounts to suit many applications. There's also a wireless remote for easy operation in or out of your vehicle and a 65 ft. cable included. The durable camera is rated IP68 for water and dust resistance. The system is backed with a 2-year warranty.