Abstract: A virtual reality (VR) system comprising a head-mounted display (HMD) and handheld controller set is enhanced to provide a more realistic end user VR experience. According to this disclosure, a chroma-keyed trainer is embedded in the VR environment for use in workouts. This creates the illusion that the trainer is with the user in the virtual room. To create this effect, the trainer is filmed using a chroma key setup (e.g., a green screen background) and with standard cameras. The video is used in the headset with the keyed color (green) removed. As the training video is rendered, a set of virtual reality (VR) events that have been synchronized to movements of the trainer in the training video are output to the user so that the trainer actively participates in the workout with the user.

Abstract: A ski tuning apparatus that is operable to provide maintenance to the bottom of snow skis and other similar equipment wherein the invention deploys a grinding drum having an outer surface that is electroplated with a diamond/zirconium material. The invention includes a base member having a plurality of walls and a bottom integrally formed to create an interior volume. An upper platform member is releasably secured to the upper edge of the base member and substantially covers the opening thereof. A motor is operably coupled to the base motor and provides operation of a drive wheel that is operably coupled to the grinding drum. A control panel provides operational control of the motor and control of the grinding drum. A spray member is mounted within the interior volume of the base member and is submerged in a liquid. A deflector member is present to inhibit spray from exiting interior volume.

Abstract: An initial pulse of radiation is generated; a section of the initial pulse of radiation is extracted to form a modified pulse of radiation, the modified pulse of radiation including a first portion and a second portion, the first portion being temporally connected to the second portion, and the first portion having a maximum energy that is less than a maximum energy of the second portion; the first portion of the modified pulse of radiation is interacted with a target material to form a modified target; and the second portion of the modified pulse of radiation is interacted with the modified target to generate plasma that emits extreme ultraviolet (EUV) light.

Abstract: An initial pulse of radiation is generated; a section of the initial pulse of radiation is extracted to form a modified pulse of radiation, the modified pulse of radiation including a first portion and a second portion, the first portion being temporally connected to the second portion, and the first portion having a maximum energy that is less than a maximum energy of the second portion; the first portion of the modified pulse of radiation is interacted with a target material to form a modified target; and the second portion of the modified pulse of radiation is interacted with the modified target to generate plasma that emits extreme ultraviolet (EUV) light.

Abstract: An initial pulse of radiation is generated; a section of the initial pulse of radiation is extracted to form a modified pulse of radiation, the modified pulse of radiation including a first portion and a second portion, the first portion being temporally connected to the second portion, and the first portion having a maximum energy that is less than a maximum energy of the second portion; the first portion of the modified pulse of radiation is interacted with a target material to form a modified target; and the second portion of the modified pulse of radiation is interacted with the modified target to generate plasma that emits extreme ultraviolet (EUV) light.