Detect-magic can be used by any character class and alchemists through their long investigations into its nature and how it bears on their alchemy have it as a permament feature. Mages however have the divine ability but the use of detect-magic merges with and enhances it. Once detect-magic is running you can see if an object player or creature is magical by the (M) following its name and where an item is enchanted then the size of the magical adjustment.