Spectra and T1 relaxation measurements have also been collected of an apple (145 g), a banana (128 g), and an intact aluminum can containing 355 ml of beer. The T1 measurements were accomplished by adding a vari-able delay following the polarization period before apply the audio-frequency pulse and fitting the resulting mag-netization decays to decaying exponentials. With sub-stantial variation in signal intensity and minor variations in lineshape, attributable to the different geometries of the samples, the spectra are essentially indistinguishable from that of the water sample. In contrast to the spectra, the T1 times of these samples vary significantly. For the tap water sample T1 = 2.3±0.1 s, while for the beer it is notably shorter, 1.5 ± 0.15 s. For the apple, T1 = 1.0±0.1 s, and the banana has T1 = 690±55 ms. While the choice of these samples may appear whimsical, a great deal of research has been undertaken in food science with NMR (see [13] for example), and many more research oppor-tunities exist in this area. A widely available low-cost spectrometer may accelerate such work. The fact that NMR measurements are possible on a liquid in an en-closed aluminum container is a testament to the ability of these low frequency electromagnetic signals to pene-trate conductors that would completely shield the radio frequencies used in high-field NMR.