ParentPostLacksWang

Standing on the ground, the sensation of weight you feel actually doesn't come directly from gravity - it comes from standing on the ground, which is pushing up on your feet as hard as gravity is pulling your whole body down. If you weren't standing on the ground, you'd feel weightless (and also be falling). In other words, except near the event horizon of a black hole, neutron star, or some other compactified star, you can't feel gravity acting on you.

So, if you don't have the ground pushing up on your feet in an aircraft, what is making you feel weight in flight? It's not the gravity, and it's not the ground - it's the lift. So, as long as the aircraft is generating lift from your bum to your head, you will feel like you are perfectly upright, and if it's near enough 1G, your tea will pour like you are on the ground.

What this means is that passengers and pilots alike can't tell if the aircraft is rolled by feel. This is part of why being instrument rated is absolutely mandatory for flying at night or in inclement weather. It's super easy to completely lose track of your aircraft's attitude, so long as you're maintaining speed and angle of attack, and haven't had the training to check yourself before you wreck yourself.

Oh, and if your aircraft is upside down, the 1G of gravity acceleration plus the 1G of upside-down lift means you are falling towards the ground at 2G. That is generally considered "not good".

Professional knowledge - the transponder could only have been feasibly disabled by pulling a fuse on the flight deck, given the sequence of events. If it had been pulled in an area with good primary radar coverage, the aircraft would not have disappeared, and other traffic could have been directed to track it.

Cardboard circuit sounds like a poor-man's breadboard. You get some cardboard and stick the component legs through it, then solder them together (sometimes with the aid of wires) on the back of the board. It's just a way to keep all the components stable and not shorting out, on the cheap :)

Doesn't have to be a tumour to warrant a scan, congenital abnormalities (with you all your life) also can cause problems, like aneurisms, other vascular deformations, etc. Migraines can be similar to epilepsy, which can also have a structural basis. Some of these problems are potentially life threatening.

Additionally, have you had your blood pressure checked around the time of an episode? Ever feel like your heart is racing when having a migraine? Could be adrenal. You need to see a doctor about these events, stop putting it off. If they brush you off, get a second opinion.

Beats the 6000 deg C when you get 4 million miles closer though... ;)