990828-025a
If you guessed it was John Lahr who assembled or made
the hands on displays, you are correct.
Was wondering if the camera could record the spinning
nylon line, driven by two motors on the two upright arms. The reflective
background has fainter images, which illustrates the picture as shown by
the paper in the foreground...the third down from the top of the page.
The frequency could be speeded up by moving the white support arms inward
or outward.
990828-026a
Another John Lahr exhibit. Seafloor spreading
with magnetic reversals representing the black/white (barcode) like time
occurances.
990828-27a
John Lahr demonstrating the sea floor spreading exhibit.
990828-028a
Communication is a good word here. The day before
(a friday), the area was mainly open for school children. As I hear
it, the area was very busy up until 2p.m. on friday.
990828-029a
Another view of sea floor spreading and subduction
zones.
990828-032a
Building frequency response exhibits.