Mechanical Resonance For whole-body mechanical vibration, the fundamental resonant frequency is typically between 5 Hz and 10 Hz, depending on posture (sitting vs. standing) and vibration magnitude. This

We have 4 trays that we can sell with all the same date code of 2241. Total quantity is 120 units. Best price per unit is 220$. Tray 1: Qty = 23 Tray 2: Qty = 24 Tray 3: Qty = 23 Tray 4: Qty = 50 We bought

Why is the recycling of automobile exhaust so interesting, and especially the the catalytic exhaust ? A catalytic converter is an exhaust emission control device that converts toxic gases and pollutants

This is another point I would like to share on my blog. I spent a lot of time to find out the most reliable electronic equipment for our solar street lights. There are 3 main parts : the battery, the solar

Testing different configuration to find out the most optimal vertical solution for solar street lights : this point is particularly important for solar lighting in the north temperate zone of the earth.

Vertical solar LED street light pole is an innovation with latest technology. It adopts the vertical solar modules by surrounding the pole instead of regular solar panel installed on top. Comparing with