# Recent Activity

1. ### Bandersnatch liked Janus's post in the thread I Would the rogue planet in this picture slow Earths spin?.

To help illustrate the comment Bandersnatch made on the resultant effect on the Earth's orbit, we can use this diagram:[ATTACH] The...

Mar 28, 2017 at 11:29 AM
2. ### Rajini replied to the thread A analzing signals from radioactive source.

Hello, Yes I use NaI(Tl) detectors. Can I connect these detectors to ADC with 5 GS/sec? Will it work? When you view the signals from...

Mar 28, 2017 at 11:26 AM
3. ### phyzguy replied to the thread B Calculating activity of a radionuclide.

If I have N0 atoms in the sample, with a decay rate of λ, the number of atoms in the sample will decay as follows: N = N_0 e^{-\lambda...

Mar 28, 2017 at 11:26 AM
4. ### COWilliam liked Deneen2000's post in the thread Newbie from KC.

Sometimes I smarter than most Frequently mistakenly I boast Not as smart as I'd like to be Since repeatedly I burn my toast! ~~~~~...

Mar 28, 2017 at 11:26 AM
5. ### berkeman liked tech99's post in the thread receiving/transmitting with a Yagi antenna?.

OK, thank you. Just for clarification, the dipoles are supplied with energy via mutual coupling.

Mar 28, 2017 at 11:25 AM
6. ### berkeman liked davenn's post in the thread receiving/transmitting with a Yagi antenna?.

that was a nice contradiction .... you had better clarify for the OP That is describing a log-periodic Yagi

Mar 28, 2017 at 11:25 AM
7. ### SpaceIsCool has a new avatar.

Mar 28, 2017 at 11:25 AM
8. ### Ken G replied to the thread I Questions about the lifecycle of stars.

But don't forget the key point-- the latter issue cause the star to shrink back down, returning to its original size. That's called...

Mar 28, 2017 at 11:24 AM
9. ### berkeman replied to the thread How to make a hardware setup for monitoring BER of modbus.

How many bit CRC? If each packet has the CRC checked, look at the packet error rate and multiply by the number of bits in the average...

Mar 28, 2017 at 11:24 AM
10. ### Chestermiller replied to the thread I Not sure Exactly what Pressure I am Solving for in this Form.

The equation you have written down is not correct, but almost correct. The equation should read $dp+\rho v dv=0$, which integrates...

Mar 28, 2017 at 11:23 AM
11. ### collinsmark replied to the thread Weird News.

Footy McFooty Face....

Mar 28, 2017 at 11:21 AM
12. ### berkeman replied to the thread PWM intensifying.

Usually a solenoid will be ON or OFF. What is tue purpose of the PWM? And yes, if you want to use LabView to generate the PWM, you...

Mar 28, 2017 at 11:20 AM
13. ### russ_watters replied to the thread Job Skills Young Engineer Career Advice.

I'm an engineer. When I was 24/25 I spent 2 years in the Navy in Pascagoula, Mississippi, which was exactly as you would expect. I...

Mar 28, 2017 at 11:20 AM
14. ### nitsuj replied to the thread B Time slowing because of speed.

Thanks PAllen and Peter, I see the accelerating rocket compared to earth equivalence. And if I see that I gotta say it's not measuring...

Mar 28, 2017 at 11:20 AM