Researchers led partly by scientists at the Washington University School of Medicine in St. Louis used retina cells from mice and humans and used powerful, speedy lasers that emit infrared light pulses. They discovered that the retina sometimes interprets multiple, high-speed pulses of infrared energy as a single pulse of half the wavelength. For example, a pair of 1000 nm photons might deliver the same amount of energy as a single 500 nm photon. This is well within the visible spectrum of light, and the eye can see it potentially. The findings from the researchers, while focused on medical applications, are nonetheless fascinating.

During the program, 37 high school hockey teams received grants from the McConnell Education Foundation. The grants, totaling $130,000, will significantly impact high school hockey programs in Ohio by providing support for teams, coaches, and players, fostering growth and excellence within the local hockey community. The contribution marks the 27th consecutive year of the Foundation’s support for high school hockey bringing its total to $1.9 million granted since its inception.

The evening included a pregame program featuring a discussion with Blue Jackets President of Hockey Operations and General Manager Don Waddell and Radio Play-by-Play Announcer Bob McElligott. Waddell shared insights on developing young hockey players and the value of high school hockey programs.

The visible band of light lies within the 390-720 nm (nanometre) range. Infrared light, on the other hand, exists on the very edge of this band. It ranges from 700 nm to 1 mm in wavelength. The human retina has special photosensitive cells within it that are particularly sensitive to the visible light spectrum.

Iluminar makes custom, dedicated infrared illuminators for surveillance and license plate capture applications. All of our infrared illuminators feature 850nm or 940nm wavelength options. Waterproofing, AC/DC power options, and pressure relief valves are standard for rugged outdoor use. To upgrade your illumination setup, call us at (281) 438-3500, and our experts will be able to help you with any inquiry.

The Columbus Blue Jackets hosted High School Hockey Night last night when the team faced the Philadelphia Flyers at Nationwide Arena. The National Hockey League (NHL) team spotlighted central Ohio high school hockey teams from the Capital Hockey Conference (CHC) and Ohio Scholastic Hockey League (OSHL). More than 1,100 players, coaches and families attended the game to celebrate the sport and highlight the young athletes. During a pregame ceremony, varsity captains representing 24 teams were recognized on the ice.

Additional varsity and junior varsity programs in the Ohio Scholastic Hockey League awarded grants include the Athens Bobcats, Columbus Academy, the Columbus Ice Hockey Club, Dublin Irish, Hilliard Wildcats, Newark Generals, Northeast Storm (representing Bexley and Johnstown), PHA Prowlers (representing Pickerington, Reynoldsburg, Pataskala, Canal Winchester), and Westerville Warcats.

The Blue Jackets return to action on Thursday when they host the Washington Capitals. Game time from Nationwide Arena is 7 p.m. ET. Live coverage on FanDuel Sports Network begins with the Blue Jackets Live pre-game show starting at 6:30 p.m. ET. The game will also be heard on the Blue Jackets Radio Network, including Sports Radio 97.1 The Fan in Columbus, and online at BlueJackets.com.

Fascinating stuff, right? In this post, we’ll explore the subject. But to understand whether we can “see” infrared, we have to learn a little bit about how light works and how the human eye perceives light.

It should make sense, then, that we cannot see infrared light. However, under certain conditions, the human retina can sense infrared light after all. It’s important to note that there isn’t an absolute cutoff. The retina only becomes less sensitive to light as it goes beyond the visible light spectrum, and it can sense infrared light, especially if it’s bright enough.

So that’s why human beings, under certain conditions, can see infrared light – especially if it’s bright enough. Manufacturers of infrared lights for common applications, such as surveillance and trail cameras, are aware of this. Quality manufacturers make covert and semi-covert illumination solutions for applications where naked-eye visibility is a concern.

Light is part of the electromagnetic spectrum, a range that covers all types of electromagnetic radiation. This includes everything from common AM and FM radio, which have the longest wavelengths, to microwaves used to heat your food and make cell phones communicate with each other. Next up are infrared waves, which lie just before the visible light spectrum begins. Ultraviolet is on the other end of the visible light spectrum, followed by X-rays and gamma rays. They’re all measured in units of length, ranging from kilometers long for radio waves all the way down to nanometres for light and picometers for X-rays.

This year’s programs receiving grants include high school varsity and junior varsity teams in the Capital Hockey Conference representing Bishop Watterson, Dublin Coffman, Dublin Jerome, Dublin Scioto, Gahanna Lincoln, New Albany, Olentangy, Olentangy Berlin, Olentangy Liberty, Olentangy Orange, St. Charles Preparatory School, St. Francis DeSales, Thomas Worthington, Upper Arlington, and Worthington Kilbourne.

In pitch darkness, where you can barely see a thing, you might be aware that there are animals that can see perfectly. Low-light vision seems like a superpower, and indeed for us humans, it is! Part of this is how certain animals with good night vision, like large cats and owls, can perceive a greater spectrum of light than we can. This includes infrared light. But you might have seen the faint reddish glow of an infrared surveillance camera; in fact, it may have even caught your eye. Isn’t this supposed to be invisible? Can humans see infrared light, then?