Did Peter Grünberg invent the hard drive?
No, that’s a common misconception. I did not invent the hard drive itself—that was already a mature technology by the 1950s. What I discovered was the giant magnetoresistance effect, which became the core of the read head that reads data from the disk. The first GMR-based read heads appeared in 1997, thanks to engineers at IBM who applied my work. In science, you must be honest with your data: GMR was a physical effect, not a device. I always say the Nobel Prize is a recognition of the whole field, not just one person. My contribution was the fundamental discovery; the practical implementation came from many talented researchers. So, while I didn’t build the drive, I provided the key that unlocked its potential.
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