The heats and what each is used for: Sparkling or Sizzling heat. Never used. Destroys the metal alloy content and grain structure. White heat or welding heat. For welding mild steel and iron. Remove from fire when sparks begin to fly and stop forge welding when down to light yellow heat. Light Yellow heat. Best heat for forging wrought iron and mild steel. Try to obtain this heat before removing from the fire for forging. Sometimes this is described as a light welding heat.
Top definition. umh. Similar to uhm, it is a cross between uh and um. Used to describe a thought, comment or response that is lingering. umh...I'm not sure where to go for dinner.
UHD (Ultra HD) is a display resolution of 3840x2160 pixels (four times as many pixels as FHD) in the same 16:9 aspect ratio. This resolution is part of the UHDTV standard and is advocated by NHK Science & Technology Research Laboratories.HD+ is a display resolution of 5120x2880 with a 16:9 aspect ratio. The line count of 2880 is also the least common multiple of 480 and 576, the scanline count of NTSC and PAL, respectively. Such a resolution can vertically scale SD content to fit by natural numbers, 6 for NTSC and 5 for PAL.