Greg Bernhardt's latest activity

Robert, My sincere sympathy to you and your family at this sad moment. I have enjoyed learning Physics from the many contributions of...

Dear Robert and family, please accept my condolences. Paul's contributions to PF are appreciated, and the pleasure at reading and...

I'm very sorry for your loss Robert. Thanks for letting us know. Paul was an important part of the PF community, he will be missed.

Thank you for the update Robert, and I'm very sorry for the loss to you and your family. Paul was an amazing member here, with many...

damn. this is hard to hear. @phinds was just a loved and core member for 15 years. Thank you so much for taking a bit of time to let us...

Good afternoon, This is not Paul, but rather his son Robert. I am very sad to write here that my dad passed away on Saturday...

I feel the same way about smoke/mo detectors

Another strange thing: Basically nothing has improved about ink jet printers in the last 20 years. Print quality, ease of use...

It has to do with the resolution of the telescope optical system: collecting sufficient light and focusing that light onto a camera...

Your reply did make a lot of sense. I'm glad you wrote a backstory with concrete details. This bodes well for you. Too often we have...

Can someone explain this a bit? Is it like we see something or some light but can't yet tell it's a galaxy? What else could it be?

https://en.wikipedia.org/wiki/MoM-z14 Any photon with energy above 24.6 eV is going to ionize any atom. K, L X-rays would certainly...

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Indeed, most powerful is that most member's profile pages are set to noindex, so no impact.

First year of two of the awards I feel like we had one