| Port-wine stains and other vascular lesions are commonly treated by argon, copper vapor or pulsed dye laser. |
| The noble gases helium, neon, argon, krypton, and xenon display fairly simple chemistry in material of solar composition. |
| Ramsay realized that argon and helium might be members of a hitherto unsuspected new group in the Periodic Table. |
| Additions of oxygen, carbon dioxide, or nitrogen to argon gas will usually cause porosity or erosion of the electrode. |
| Argon dating requires all sorts of assumptions about starting amounts of argon, rates of change and limits on outside factors. |
| Initially, I guessed and told her they might package the salad in an inert or nonoxygen atmosphere of nitrogen or maybe argon. |
