In aprevious essay on SLR, I annotated the graph at the left to show that while tide gauge-based SLR data had (way-too-small) error bars, satellite-based global mean sea level was [sarcastically] “errorless” — meaning only that it shows no indication of uncertainty. Here’s what I ...
In addition, the image itself may appear to be focused not at a point, but its location may span a range of several millimeters. Parallax is another significant source of a reading error, where the reading depends on your line of sight. In the first year laboratory you will often use ...