This paper presents the implementation of a thermal camera for the quantitative estimation of power losses in a high frequency planar transformer (100 kHz/ 5600 VA). The methodology is based on the observation of the transient temperature rise and determination of the power losses by means of curves representing the derivative of temperature as a function of power losses dissipated in the transformer. First, the thermal calibration characteristics had to be obtained from a simple experiment, where power losses are generated by DC current in the ferrite core and windings. Next, experimental investigations focused on the determination of the transformer power losses for a short circuit and no load, with a resistive load and with the rectifier as a load were carried out. Finally, to verify the obtained results, analytical calculations based on Dowell’s and modified Steinmetz’s equations were additionally made, which showed a good convergence. The proposed method is easy to implement and can be used as an alternative to the calorimetric method which is time-consuming and requires a complicated measurement setup.

From 20th to 28th August 2022, the 26th ICOM General Conference took place in Prague. Its main theme was “The Power of Museums”. The conference was the product of a long discussion about defining the contemporary role of museums and their obligations to the past, present, and future. In the article titled: The Humans and their History in Museums. A few Reflections about the 26th ICOM General Conference in Prague the author discusses the course of proceedings and asks questions about the character and nature of the museum’s work in the field of history as an academic discipline. Some of the most important questions discussed in the paper include those on: museums’ aspirations in the field of sensual depiction of history; the relationship between the tangible and intangible heritage within museums’ method of work; the role of heritage interpretation as the basic tool of contact with the audience; and the urgent issue of neutrality and institutions’ engagement in the face of contemporary challenges. The source materials used in order to find answers to these questions are the legal acts about museums; the resolutions of the 1st Congress of Polish Museum Professionals (April 2015 in Łódź); and the definitions that constitute museums, both through legal acts on the state level and those passed by the International Council of Museums (ICOM).