Astonishing Facts....
Discussion
GOG440 said:
If you have an MRI scan you have to tell the radiographer how much you weigh.
I dont recall giving that information, though they did ask about any eye injuries that may have left metal inside the eye...It does get fugging warm inside the scanner though, which doesn't really help if you are already feeling claustrophobic. A bit of air conditioning wouldnt go amiss.
Thesprucegoose said:
John Young smuggled a corn beef sandwich into space.
Somewhat similar, the crew of Apollo 15 smuggled nearly 400 stamped covers and took them to the surface of the moon, none of the crew ever went to space again, the stamps were for selling to fund the astronauts children’s trust fund. David Scott admitted being ring leader but Al Worden denied involvement even though he sold some after he fell on hard times.GOG440 said:
If you have an MRI scan you have to tell the radiographer how much you weigh.
This is because there are fairly strict limits of how many Watts/kilo of RF we are allowed to put into our patients to make sure we dont cook you.
Even with these safeguards certain groups of patients can get really hot when we scan them, especially overweight people who have been known to come out looking like they have been on the shower!
Given the cost of an MRI scanner (I don't know how much they cost, but I bet it's a lot) wouldn't you imagine the manufacturer could build some sort of rudimentary (or even highly accurate) weight measuring device into it?This is because there are fairly strict limits of how many Watts/kilo of RF we are allowed to put into our patients to make sure we dont cook you.
Even with these safeguards certain groups of patients can get really hot when we scan them, especially overweight people who have been known to come out looking like they have been on the shower!
droopsnoot said:
GOG440 said:
If you have an MRI scan you have to tell the radiographer how much you weigh.
This is because there are fairly strict limits of how many Watts/kilo of RF we are allowed to put into our patients to make sure we dont cook you.
Even with these safeguards certain groups of patients can get really hot when we scan them, especially overweight people who have been known to come out looking like they have been on the shower!
Given the cost of an MRI scanner (I don't know how much they cost, but I bet it's a lot) wouldn't you imagine the manufacturer could build some sort of rudimentary (or even highly accurate) weight measuring device into it?This is because there are fairly strict limits of how many Watts/kilo of RF we are allowed to put into our patients to make sure we dont cook you.
Even with these safeguards certain groups of patients can get really hot when we scan them, especially overweight people who have been known to come out looking like they have been on the shower!
Especially when it's much cheaper and easier to just weigh the patient beforehand with some bathroom scales and then control the power of the EM field.
bertie said:
Nanook said:
bertie said:
captain_cynic said:
2fast748 said:
I don't think the Suez canal has any locks.
Correct, the Suez connects an ocean to an ocean, rather than to a lake that is higher than sea level like the Panama Canal.https://en.m.wikipedia.org/wiki/Panama_Canal_locks
Yes. That's what he said.
There are locks on the Panama canal, not the Suez.
Must read next time!!
Edited by bertie on Friday 27th April 14:34
[quote=C&C] Errr...
https://en.m.wikipedia.org/wiki/Panama_Canal_locksErr...
Yes. That's what he said.
There are locks on the Panama canal, not the Suez.D'oh....That is a very good point
Must read next time!!
Relating back to the original point about the boat and the load on the aquaduct, the Suez canal as well as having no locks, also doesn't have any aquaducts AFAIK.
I'm not commenting, I looked a right bell end last time!bertie said:
Nanook said:
bertie said:
captain_cynic said:
2fast748 said:
I don't think the Suez canal has any locks.
Correct, the Suez connects an ocean to an ocean, rather than to a lake that is higher than sea level like the Panama Canal.https://en.m.wikipedia.org/wiki/Panama_Canal_locks
Yes. That's what he said.
There are locks on the Panama canal, not the Suez.
Must read next time!!
Edited by bertie on Friday 27th April 14:34
Arrius said:
A microwave oven emits radio waves at a certain frequency that is why it can only heat up substances that contain water, fats and sugars. Plastics, glass or ceramics aren't affected because they can not absorb the radio waves.
This is not true, I can heat a plate or make glass molten in a microwave.227bhp said:
Arrius said:
A microwave oven emits radio waves at a certain frequency that is why it can only heat up substances that contain water, fats and sugars. Plastics, glass or ceramics aren't affected because they can not absorb the radio waves.
This is not true, I can heat a plate or make glass molten in a microwave.Sheets Tabuer said:
A microwave will heat most things but it affects water so much because of dipole rotation and water molecules are free to rotate, not so easy for a molecule encased in a plastic tub, more astonishing is the fact if you look at the size of a microwave itself at the Mhz of a domestic oven it is around about 8-12 cm or about the size of a ball which is why it doesn't go through the mesh of the door.
Mesh is a clever design idea. Light at a higher frequency can pass but for the frequency the microwave works at it is a faraday cage. Hence it is not dangerous to stand in front of it watching your food heat up (not cook, just heat up). Same as how satellite dishes are usually mesh to reduce weight and wind resistance.Rostfritt said:
Mesh is a clever design idea. Light at a higher frequency can pass but for the frequency the microwave works at it is a faraday cage. Hence it is not dangerous to stand in front of it watching your food heat up (not cook, just heat up). Same as how satellite dishes are usually mesh to reduce weight and wind resistance.
Rostfritt said:
Mesh is a clever design idea. Light at a higher frequency can pass but for the frequency the microwave works at it is a faraday cage. Hence it is not dangerous to stand in front of it watching your food heat up (not cook, just heat up). Same as how satellite dishes are usually mesh to reduce weight and wind resistance.
So not the same at all then.SCEtoAUX said:
Rostfritt said:
Mesh is a clever design idea. Light at a higher frequency can pass but for the frequency the microwave works at it is a faraday cage. Hence it is not dangerous to stand in front of it watching your food heat up (not cook, just heat up). Same as how satellite dishes are usually mesh to reduce weight and wind resistance.
So not the same at all then.The mesh on the satellite dish reflects the microwaves back into the LNB whilst letting wind through. The dish shape means that the reflection is focused.
SCEtoAUX said:
Rostfritt said:
Mesh is a clever design idea. Light at a higher frequency can pass but for the frequency the microwave works at it is a faraday cage. Hence it is not dangerous to stand in front of it watching your food heat up (not cook, just heat up). Same as how satellite dishes are usually mesh to reduce weight and wind resistance.
So not the same at all then.Gassing Station | The Lounge | Top of Page | What's New | My Stuff