![How smoked paper was made for old seismographs (to record earthquakes, eruptions) before modern ink or computers : r/educationalgifs How smoked paper was made for old seismographs (to record earthquakes, eruptions) before modern ink or computers : r/educationalgifs](https://external-preview.redd.it/tRpt5EAMXn-mStMDqjyfCFTPES6MOnQtcI9Zl873yCw.jpg?auto=webp&s=594f33259baeeca48df422f12a52c347233b5a28)
How smoked paper was made for old seismographs (to record earthquakes, eruptions) before modern ink or computers : r/educationalgifs
![Had to pull the indoor unit down because the person before me didn't level it… and this is what I saw : r/hvacadvice Had to pull the indoor unit down because the person before me didn't level it… and this is what I saw : r/hvacadvice](https://i.redd.it/yz6mueo7gpsa1.jpg)
Had to pull the indoor unit down because the person before me didn't level it… and this is what I saw : r/hvacadvice
![Materials | Free Full-Text | A Full-Scale Experimental Investigation of Utility Poles Made of Glass Fibre Reinforced Polymer Materials | Free Full-Text | A Full-Scale Experimental Investigation of Utility Poles Made of Glass Fibre Reinforced Polymer](https://www.mdpi.com/materials/materials-14-07398/article_deploy/html/images/materials-14-07398-g009-550.jpg)