If your digital TV is getting a signal at all, you're getting clear audio and video. Â­That said, if you have a TV with an analog tuner and a terrestrial antenna -- not a satellite dish antenna -- you need a digital-to-analog converter box to continue watching TV now that the deadline for conversion has passed.igital TV Conversion. You might think that with the switch to digital television you need to buy a new, expensive high-definition television (HDTV) set. You can do that if you want to, and you'd have many good reasons to do so.
Lavoisier immediately repeated Priestleyâs experiments and, between 1775 and 1780, conducted intensive investigations from which he derived the elementary nature of oxygen, recognized it as the âactiveâ principle in the atmosphere, interpreted its role in combustion and respiration, and gave it its name.
William Ramsay. Winner of the 1904 Nobel Prize in Chemistry, Ramsay helped establish the noble gases as a new group in the periodic table. He first discovered argon and then helium, followed by the other noble gases. Home / Learn / Historical Biographies The Scottish chemist William Ramsay (1852â1916) is known for work that introduced a whole new group to the periodic table, variously called over time the inert, rare, or noble gases.