These are some of the benefits of using the human body as an input device in VR:A. Reduced simulator sickness B. Improved presence C. (Potentially) more intuitive user interfaces D. Embodied experiences are enjoyable E. Improved transference between the real and virtual worlds   

For the following questions, mark True or False:  1. A wide range of sensor technologies is required to support augmented reality and virtual reality (AR/VR) systems. 2. Today’s AR/VR implementations are mostly focused on audio interfaces and rely on temperature tracking sensors. 3. Devices that can add a thermal dimension to AR/VR environments are not considered significant in current research. 4. Thermal sensing technologies proposed for AR/VR systems include thermoresistive, pyroelectric, thermoelectric, and thermogalvanic technologies. 5. Thermo-haptics or thermal stimulation is another emerging area of AR/VR that will provide an enhanced level of immersion in AR/VR environments.

Regarding Head Tracked Displays, please mark True or False for the items below: 1. Head Tracked Displays (HTDs) track the location of the user’s head and update the image shown based on the user’s perspective.   2. Fishtank VR is not considered a type of Head Tracked Display.   3. One of the pros of HTDs is that they obscure the real world.   4. A con of HTDs is that they have a larger physical footprint compared to other VR systems.   5. Most HTDs are not stereoscopic.  

The low side pressure gauge reads pressures:

An interlock control system is used on central electric heating systems to ____.

Which of the following combustible gases is lighter than air?

The average weight of air at sea level will cause a column of mercury to rise to a level of:

Open loop, water-source heat pumps, used in commercial applications, utilize which of the following types of equipment to maintain a desired loop temperature?

Portable extension ladders should be placed one foot away from the vertical wall of a building for every ________________ of height to the point of support.

Refrigerant vapors or mists in high concentrations should not be inhaled since they :