View allAll Photos Tagged Probe
universal logic probe using the popular LM393 and NE555 ICs. All the details including schematic, PCB design files and CAD files are available at jayakody2000lk.blogspot.com/2021/08/universal-logic-probe...
Testing a NaI(Tl) probe I got lying around for some time. Using documentation from the company that build these probes, Scionix, I was able to make a voltage divider and solder it to the tube socket. Later I will put it in a proper housing with BNC sockets and a mu metal shield against the Earths magnetic field, which can influence the performance of the probe by bending electrons in the photomultiplier.
Testing is done with a Cs-137 doped spark gap lying on the workbench.
I use my old Hameg 15 Mhz scope to view the pulses. It is fine for general electronics, but the steep pulses from the PMT are difficult for the scope to display properly. I need to get a better scope or just put a RC filter in line with the probe to lengthen the pulses.
These are the seeds of sweet gum (Liquidambar styraciflua) that reside within those woody, mace-like seed balls. I had never seen the seeds until a year ago when I saw a flock of goldfinches probing their bills into the balls. Not having seen the seeds before, I cut one of the balls open to see what the seeds were like to be of so much interest to the goldfinches. They remind me of the seeds of ash trees only they are much, much smaller. One of the seeds in the photo is next to the metric scale, and it is just shy of ten millimeters. These seeds are dried out, so fresh seeds probably have a little more mass to them than these do.
The other day I discovered this bee in the act of discovering. Taken with a Canon 60mm USM Macro lens. Type L for a better view.
Our Daily Topic - Discovery - 8/21/13
My friend was more in a hurry than I was, but I couldn't always find the signs fast enough that told us what we were looking at.
That said, I know I've seen this before, on TV and in newspapers and magazines (and later the Internet), but I can't remember if this was a satellite or a deep space probe. From its look, it seems to be more of a probe than just another communications satellite. If anyone knows what this is, post a response below. Thanks in advance.
–verb (used with object)
1. to search into or examine thoroughly; question closely: to probe one's conscience.
2. to examine or explore with a probe.
–verb (used without object)
3. to examine or explore with or as if with a probe.\
–noun
4.the act of probing.
5. a slender surgical instrument for exploring the depth or direction of a wound, sinus, or the like.
6. an investigation, especially by a legislative committee, of suspected illegal activity.
7. Aerospace . space probe.
8. a projecting, pipelike device on a receiving aircraft used to make connection with and receive fuel from a tanker aircraft during refueling in flight.
9. a device, attached by cord to an oven, that can be inserted into roasts or other food so that the oven shuts off when the desired internal temperature of the food is reached.
10. Biology . any identifiable substance that is used to detect, isolate, or identify another substance, as a labeled strand of DNA that hybridizes with its complementary RNA or a monoclonal antibody that combines with a specific protein.
Origin:
1555–65; (noun) < Medieval Latin proba examination, Late Latin: test, derivative of probāre ( see prove); (v.) partly derivative of the noun, partly < Latin probāre.
Thank you Dictionary.com
The British assault force with elements of the 1st Royal Scots (Light Coy) along with the 41st Regiment.
Sony a6000 + SMC Pentax-A 1:4 200mm