What is convex mirrorused for

Not only does the cost of ammunition add up quickly, so does travel, paid training, and overtime. “What you find is that two weeks of training 400 officers can incur six figure costs,” Hoang says. “And that’s just for one active shooter training course.”

Convex mirrorray diagram

“He was basically blown away,” Hoang says. “That was the first time he had been exposed to VR. He thought it was so immersive how the monsters [in the game] were getting all up in his face.”

These are called diverging mirrors because it makes rays diverge upon reflection. Thus, when a beam of light is directed on it, it will make the initially parallel rays, making up the beam, diverge after striking its reflective surface.

Concavemirrorandconvex mirror

Hoang recalls meeting Griffin while recording a radio show on entrepreneurship. It was then that he first tried a VR game, and he saw its potential immediately.

But, it’s not getting attention just in the world of law enforcement. Hoang says the startup took third place at UT Austin Disrupt Texas last year and first place at the UT Dallas Big Idea Competition this year, receiving an estimated $40,000 in prizes so far.

SURVIVR has also presented its tech to two large organizations: the North Texas Police Chiefs Association and the Caruth Police Institute.

Moreover, it may reflect an image in two ways. A large image forms when the object is closer to the mirror, i.e. a virtual image. Further, a smaller image forms when the object is farther away from the mirror, i.e. a real image. Dentists also use these types of mirrors.

Answer: When you place an object in front of a concave mirror, an enlarged image of the object is generated when it is maintained near to the mirror, and an inverted picture of the object is formed when it is kept at a distance from the mirror. A convex mirror always creates a tiny, erect picture of the thing.

Brian Hoang, a recent UT Dallas CS graduate, and his co-founder, Marwan Kodeih, originally founded SURVIVR in 2016 as a game development studio called Immosis. In 2017, it transitioned to serve clients across training, education, gaming, and healthcare.

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is working to enter the law enforcement market, starting first with Texas’ estimated 2,700 law enforcement departments. It’s already made its way into four, in Richardson, Frisco, Colleyville, and Rowlett. It’s also in talks to get the software in a North Texas sheriffs department’s curriculum.

What started as an action-horror VR game filled with hordes of demonic creatures has now pivoted into a real-life training for law enforcement.

Thus, because of its wider fields of view compared to other reflective surfaces, we use them mostly in automobile side mirrors. It allows you to see more of your rear. It also serves as a good security device. For instance, they are the ones store owners install in their shops that are large disk-like reflective surfaces.

Convex mirrordiagram

Answer: The centre of curvature is not a component of the mirror, but rather exists outside of it. Concave and convex mirrors may be made from a single spherical glass by splitting it and polishing both pieces in opposite directions.

Griffin asked Hoang if the program could, for example, drop him into a traffic stop or an active shooter situation instead of a cave of zombies. The answer: a resounding yes. And its impact was seen almost immediately.

Convex mirrors are diverging mirrors. In these, the incident ray which emerges from the same point reflects off and moves in a different direction. As a result, the light rays do not intersect on the mirror’s object side and create the virtual image of the real object. You can call it a kind of spherical mirror in which the reflective surface curves outwards. It will create a virtual image after it reflects from the mirror, the ray of lights will meet at an exact point. Moreover, the image which forms is erect, diminished and concerns the object.

Additionally, the software allows for ongoing, on-the-job training and continuing education that can’t be accessed via a standard training model, including implicit bias training.

But Griffin wanted to take it a step further. After witnessing how immersive and realistic the demo was, Griffin, a former police officer, insisted the team apply their expertise to real-world training.

“We want to give them as much exposure to what could happen in the real world—many possibilities and scenarios—so that when they’re actually out there doing their job,” Hoang says, “they can go home at night, and so can we.”

Concavemirrorexamples

Convex mirrorexamples

“Not only do police think VR training is the future, but some of them outright said they prefer this over existing systems out there, which are basically TV screen-based,” Hoang says. “Already, they’re saying they prefer our tech over established company’s.”

“[VR training is] way more cost effective,” he says. “It eliminates the need for ammunition. Every time you pull a trigger it costs money.”

It’s also one of 74 startups accepted to the MassChallenge International Accelerator this year. Dubbed by MassChallenge as the “top startup applicants from around the world,” the 74 companies will compete for up to $500,000 in equity-free cash prizes.

Concave mirrors are converging mirrors. The parallel incident rays fall on the mirror’s surface and the rays reflect and meet at a certain point known as the focal point. A concave mirror’s shape is similar to a spoon. When we place this mirror too close to an object, we get a magnified and virtual image. However, when there is an increase in the distance between the object and the mirror, the size of the image will reduce thereby creating a real image. Thus, the image which forms may be large or small, real or virtual.

The UT Dallas Computer Science program is one of the largest Computer Science departments in the United States with over 2,800 bachelors-degree students, more than 1,000 master’s students, 190 Ph.D. students,  52 tenure-track faculty members, and 41 full-time senior lecturers, as of Fall 2018. With The University of Texas at Dallas’ unique history of starting as a graduate institution first, the CS Department is built on a legacy of valuing innovative research and providing advanced training for software engineers and computer scientists.

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Answer 2: Concave mirrors are used in headlights, searchlights and projectors as they give a magnified image of the objects.

It is important to note that the reflecting surface of a concave mirror bends inward to focus, explicitly, away from the light source. When the light bounces by the curve up to a specific area, it creates an image.

Answer: Concave mirrors can be found in torch lights and automotive headlights. Convex mirrors include magnifying glasses and telescopes.

Mirrors are smooth, polished or shining surfaces. They reflect the light beam and create images. Thus, there are two kinds of mirrors, plane and spherical mirrors. Further, spherical mirrors divide into convex and concave mirrors. It is important to know the difference between concave and convex mirror to get a clear understanding. Basically, the reflecting surface of the convex mirror bulges outside while the concave mirror bulges inwards. The major difference is the image that forms in these two mirrors. In other words, diminished images form in convex mirrors while enlarged images form in concave mirrors.

Now, SURVIVR—dubbed ‘The Future of Police Training’—is on an upward trajectory to take over Texas and beyond in the next year.

Virtual reality can be fun and games, but the tech’s use cases go way beyond that. One Richardson startup called SURVIVR is using the emerging technology to empower officers to better protect communities and themselves.

SURVIVR’s first “aha” moment was the reception the software received from real law enforcement officers in demonstrations (the company has done about 16 since March).

Founded by a recent UT Dallas CS grad, Brian Hoang, VR training startup SURVIVR is working to change how law enforcement trains its officers, while cutting costs and saving lives along the way.

Answer: The focal length of a concave mirror is positive because the focus is on the front side, whereas the focal length of a convex mirror is negative because the focus is on the backside.

Answer: A concave mirror is formed by painting the outside surface of a spherical mirror, whereas a convex mirror is formed by painting the interior surface of a spherical mirror.

SURVIVR is working now to scale, ideally with the help of some funding. Hoang says its now in a pre-seed round and aims to raise at least $150,000 in funding.