Printed Clocks

Introduction to Atomic Clocks: The Ultimate Timekeeping Devices

Atomic clocks are the most precise timekeeping devices in existence, relying on the consistent vibrations of atoms to measure time. Unlike traditional clocks that depend on mechanical parts or quartz crystals, atomic clocks use the resonance frequencies of specific atoms, such as cesium or rubidium, to define a second with extraordinary accuracy. These clocks are essential for various applications, including GPS navigation, global communication networks, and scientific research. Their ability to maintain time with minimal drift is crucial for synchronizing systems worldwide. Since their invention in the mid-20th century, atomic clocks have revolutionized how we measure and perceive time, enabling advancements in technology and science that require unparalleled precision.

How Atomic Clocks Work: The Science Behind Precision

Atomic clocks operate based on the principle that atoms oscillate at incredibly stable frequencies. Cesium-133 atoms, for example, oscillate approximately 9,192,631,770 times per second, defining…

I came across an old video of yours (https://www.youtube.com/watch?v=jbh_vp3qcRU) when I doing some experiments on friction with various arbor sizes. You say that smaller arbors have smaller friction. I was wondering why you went with a 3mm arbor for the pendulum in SP5, as it is the place where friction (or energy loss) matters the most. Wouldn't 1.5mm have given lower energy loss and hence allowed a lower driving weight.

(Long and probably tedious details follow.)

My experiments consisted of setting up a standalone pendulum and timing how long its swing took to decay over a specific range. I did this with 1.5, 2 and 3mm arbors, and I also compared cases where the arbor was held tightly in the pendulum head and where it was loose. It was always loose in the frame. I also tried bearings versus a smooth and deburred hole of a size a little larger…

I am assembling the SP6 gears with the arbor of 1/16". By drilling the holes of the gears, I was able to push the arbor through the gears, but it is.a tight fit. Is it supposed to be a tight fit or should I drill the holes bigger to make the gears rotate more freely?

When I push the arbors into the four holes on the front frame, the fitting is so tight that the arbor won't rotate. Is it correct?

thanks,

I built an SP1, and wanted to make a few modifications, was wondering if the CAD files are available.