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The simple microscope was for a long time the best instrument to scrutinize the microscopic world. Its quality is greater than what is usually assumed and it allows the observation of almost all structures that are seen with a modern compound microscope. We will explain how to build a powerful simple microscope with more than 400 magnification, using a microsphere lens. [ABSTRACT FROM AUTHOR]

This article shows us how from the experiences shared with the Master Daniel Herrera, phenomenology is not far from being a job in which the philosopher details the life-world as if it were an encrypted text that demands the phenomenological reflection, as if it were a magni- fying glass in the hands of a rigorous reader. The text recalls the visits of Professor Juan Cepeda to the home of Master Daniel Herrera, and how he would answer his concerns making use of a magnifying glass to assist his reading. [ABSTRACT FROM AUTHOR]