In this database you find (some of) the pictures from the picture gallery of the department of Hydraulic Engineering of the TU https:.
By clicking on the picture, you get the large version. For this a TU https: NetID is required.
All pictures are available under the Dutch creative commons license.
Creative Commons Naamsvermelding 4.0 Internationaal-licentie.
Note1: that the fact you need a TU NetID is not a restriction of public use, it is only a matter of server space. In case you need a picture, contact email@example.com
Note2: This system assumes that the pictures have jpg-format. There are some (animated) pictures with gif format. In case you want to see the large picture (after login with yur NetID) you may get a warning in the style of "404 - File or directory not found". IN that case replace .jpg to .gif in the browser command bar.
Pictures are ordered in files per topic. However, not all antique pictures are already placed in files per topic, they can be found in the clusters below. You can search pictures by keyword, bij category, but also a list of some special types, the Glass Negatives and the Magical Lantern Slides.
To show pictures in a classroom, a magic lantern was used (until approximately the 2nd World War). For this machine special (large size) slides were made (8x8 cm). These slides are digitized and available in this gallery. For an overview, click on this category and then click on "display" below. Projections with a magic lantern were only possible in full darkness because of the capacity of the lamp (increasing the light intensity would make the device too hot).
Because of the low light intensity of the magic lantern, projections has to be done in full darkness. This made it impossible to make notes for the students. Therefore also (coloured) posters have been made, with a size of approximately 1 m2.The posters were glued on textile and rolled for storage. Each poster was photographed and a small (black & white) photo with title and number was placed on an archive card. In this way the professor could select the required posters for his lecture and an assistant could collect them and hang them in the lecture room. The original posters do not exist anymore, but the cards survived and were digitized.
For the convenience of students, small drawings of constructions and details were printed and distributed. These drawings were called "autografiŽn", which is an absolutely uncommon word in Dutch. A number of them are scanned and available.
Pictures originating from the archives of the Hydraulic Engineering department have as source the code "WBK".
First select the type of display: