# Comment on Computational Microscopy Video (includes lensless methods)

Computational Microscopy by Laura Waller https://www.youtube.com/watch?v=sCCGnxRoUr4 Your diagram at 18:05 is not the way it works. Your every day matrix methods ALL are used by tens of thousands of groups and individuals all using related methods. The things you do not know, mostly there will be others who do. If you haven’t learned something yet,

# Comment on “”Can we ever replace the gravitational force model with something more practical, so we control the forces?”

https://www.researchgate.net/publication/353838684 Recommend you change the title to “Can we ever replace the gravitational force model with something more practical, so we control the forces?” Mircea,   Did you ever get an answer to your question? Masses with relatively small number of free charges per kilogram can have electrical forces equivalent to the gravitational force.

# What is the ratio of nuclear to gravitational energy for the sun during its whole life cycle?

David, I was starting to read “Submillimetre Astronomy” by Watt and Webster and they were talking about molecular clouds. They mention the magnetic energy density being approximately equal to the kinetic energy density, then talked about a cascade of scales.  It has been on my mind to check how much nuclear energy in generated in

# Comment on Electromagnet for attracting copper

Electromagnet for Attracting Copper, Aluminum and Non-Ferrous Metals like GOLD! https://www.youtube.com/watch?v=_mQeaKkaEcQ Yes, vary the frequency and measure the force response. A spectrum is easier to use and understand. There should be specific resonances for each kind and shape of material. Electric and magnetic polarization studies of materials have been tried since earliest days, but have

# Comment on Video about paramagnetic resonance algorithms

Dr. Mark Tseytlin | Rapid Scan EPR Imaging Methods and Applications https://www.youtube.com/watch?v=DsVchd3Bzw0 This would be much more useful if you posted links to your papers, particularly General Solution for Rapid Scan EPR Deconvolution Problem https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7575242/ I generally do not recommend Matlab for Internet users. It is too slow and expensive to recommend to billions of

# Review of Dewalt Laser Tripod with Tilting Head (DW0881T)

https://www.amazon.com/gp/product/B07RX1Z2S1 I wanted a light weight, sturdy, brand name tripod with ability for pointing anything mounted on it. But it is cheaply made. The parts are good, but the integration is not. The people assembling it, probably never had to use it themselves. I have a telescope that ought to fit nicely. It did, but

# Laser self mixing and laser feedback interferometry and Fabry-Perot cavity precise position measurements

Thank you for sharing your research. – Richard I try to follow all low cost interferometry methods. I started it because of my interest in gravitational imaging arrays and gravitational wave communication. Joe Weber at Univ Maryland College Park encouraged me to work on that back in the late 1970’s. Beside photon interferometry, there is

# Comment to All Sky Camera group

https://www.facebook.com/groups/172438633343696 Can someone tell me the current best all sky set up? I was thinking of one that had zoom from all sky to 30x. Any suggestions. Thanks. I was looking at PTZ low light security cameras. Dan Bush Thank you. Your picture gallery is filled with beautiful images. I searched fro Hikvision cameras and

# Comment on Can You Modify A Car To Save Fuel?

Can You Modify A Car To Save Fuel? – Fifth Gear https://www.youtube.com/watch?v=39g5D7h7jf8 The weight reduction impact shows up if you start and stop as part of a test. Aerodynamic drag goes as the density of air times the velocity squared. You should have waited for a day identical to the first. You guys are in

# Comment on Houston Astronomical Society website and practices

Debbie, First, your novice videos should be globally public on your website.  Either HAS is an organization devoted to all people knowing about the sky and heavens, or not.  Share openly.  If there are things specific to secure gatherings at private places, those should not be shared, but minimized or separate.  I tell groups like