Recent content by Swamp Thing
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How to route internet traffic via LAN port on a home router
I am using an old ISP-provided fiber router as a secondary router to extend the WiFi range on my newer fiber router. I have a LAN cable running from the LAN1 port on the secondary router to the LAN1 port on the current ISP's fiber router. Devices on the secondary router are able to access the...- Swamp Thing
- Thread
- Replies: 1
- Forum: Computing and Technology
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Provide DHCP to devices on secondary (extension) router
After some online research I enabled DHCP on both routers, setting up non-overlapping pools of addresses. So devices can get connected via either router. However, the secondary router still doesn't know how to forward IPV4 internet traffic to the first one. (IPV6 somehow works magically, maybe...- Swamp Thing
- Post #2
- Forum: Computing and Technology
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Provide DHCP to devices on secondary (extension) router
I have connected a second router to my ISP's router using a LAN cable in order to cover areas that the ISP's WiFi doesn't reach too well. The first router's IP is 192.168.xy.1, and I set the second router to be 192.168.xy.7. Now if I connect to the second router's WiFi I can use the internet...- Swamp Thing
- Thread
- Replies: 1
- Forum: Computing and Technology
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Undergrad What forces a magnet's field to track the rotation of the magnet?
I wonder if other people who are getting on in years have this same kind of experience: thinking about something you thought you understood, and having a silly question pop into your mind (perhaps a question that could lead to interesting answers). My silly question of the day is this: Given...- Swamp Thing
- Thread
- Replies: 1
- Forum: Quantum Physics
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Raspberry Pi 5 -- Start up USB Wifi Dongle on boot
The onboard adapter has a smaller range than the dongle. The dongle has an antenna like the ones on routers etc. and has a somewhat greater range.- Swamp Thing
- Post #3
- Forum: Computing and Technology
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Raspberry Pi 5 -- Start up USB Wifi Dongle on boot
I bought a USB WiFi adapter that I want to use on a Raspberry Pi 5 running RP OS. It works fine if I plug it in after booting, but doesn't start up automatically on boot. It does get listed by lsusb after booting. How can I set it up so that it consistently starts up and connects to my router...- Swamp Thing
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- Replies: 2
- Forum: Computing and Technology
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High School Mass & energy increments a la e = mc^2
So if I understand correctly, when we want to calculate the acceleration of a charged bound system under a certain field, we have to plug in the equivalent mass of the binding energy manually. There is no way the exact acceleration can fall out automatically from some more fundamental...- Swamp Thing
- Post #7
- Forum: Other Physics Topics
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High School Mass & energy increments a la e = mc^2
I was not trying to compare the atom mass with the total mass of its component bits and bobs. I was trying to compare two atoms or ions in which at leas one electron in one atom or ion is at a higher energy level than its counterpart in the other atom or ion.- Swamp Thing
- Post #5
- Forum: Other Physics Topics
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High School Mass & energy increments a la e = mc^2
Then is there anything specific to which we can attribute the extra mass, or is it just somehow acquired by the whole system in some "holistic" way? Edit: For example, take an ion that has all electrons in their lowest possible levels and another ion that has one excited electron. Presumably...- Swamp Thing
- Post #3
- Forum: Other Physics Topics
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High School Mass & energy increments a la e = mc^2
When we consider the mass difference between an excited atom and an atom in the ground state, is it possible (or even meaningful) to try and drill down and say exactly where the extra delta(mv^2) resides in the excited case? For instance, can we say that there are more virtual photons (or maybe...- Swamp Thing
- Thread
- Replies: 9
- Forum: Other Physics Topics
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Collection of Lame Jokes
I still don't understand.- Swamp Thing
- Post #23,529
- Forum: General Discussion
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Collection of Lame Jokes
Um, what actually happens when the Schroedinger's cat detects a photon from the enemy? ... Never mind. I don't want to know.- Swamp Thing
- Post #23,528
- Forum: General Discussion
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Today I Learned
TIL that certain marine animals "steal" chloroplasts from marine plants, after which they can live on sunlight for a pretty long time. https://youtube.com/clip/Ugkxy3wH7ud6Cz15AGUej2NeEgADp-hm6xK7?si=h5C9r0lmHGKulVJX Edit: The stolen chloroplasts are called kleptoplasts, and the propensity to...- Swamp Thing
- Post #6,799
- Forum: General Discussion
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What is this metal insert for in a desk?
This engineered wood table has metal inserts like this one fitted on the side and back boards, near the corners. Each board is 10 mm thick and the insert doesn't show on the other side of the board (the side facing outwards). I can also see an insert on the board that forms part of the chest of...- Swamp Thing
- Thread
- Replies: 2
- Forum: General Engineering
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Random Thoughts 7
This cardboard box has a little tab on the big tab that keeps the "lid" flap closed by fitting into a slot on the flap. The little flap helps you to pull the big tab out of the slot more easily when you want to open the box. This reminded me of "servo tabs" on certain aircraft --- little tabs...- Swamp Thing
- Post #1,859
- Forum: General Discussion