+understand that a piezo-electric crystal changes shape when a p.d. is applied across it and that the crystal generates an e.m.f. when its shape changes
+understand how ultrasound waves are generated and detected by a piezoelectric transducer
+understand how the reflection of pulses of ultrasound at boundaries between tissues can be used to
+obtain diagnostic information about internal structures
+define the specific acoustic impedance of a medium as Z = ρc, where c is the speed of sound in the medium
+use IR/ I0= (Z1– Z2)2 / (Z1+ Z2)2 for the intensity reflection coefficient of a boundary between two media
+recall and use I = I0^e–μx for the attenuation of ultrasound in matter

+explain that X-rays are produced by electron bombardment of a metal target and calculate the minimum +wavelength of X-rays produced from the accelerating p.d.
+understand the use of X-rays in imaging internal body structures, including an understanding of the term contrast in X-ray imaging
+recall and use I = I0^e–μx for the attenuation of X-rays in matter
+understand that computed tomography (CT) scanning produces a 3D image of an internal structure by first combining multiple X-ray images taken in the same section from different angles to obtain a 2D image of the section, then repeating this process along an axis and combining 2D images of multiple sections

+understand that a tracer is a substance containing radioactive nuclei that can be introduced into the body and is then absorbed by the tissue being studied
+recall that a tracer that decays by β+ decay is used in positron emission tomography (PET scanning)
3+ understand that annihilation occurs when a particle interacts with its antiparticle and that mass–energy and momentum are conserved in the process
4 + explain that, in PET scanning, positrons emitted by the decay of the tracer annihilate when they interact with electrons in the tissue, producing a pair of gamma-ray photons travelling in opposite directions
5 + calculate the energy of the gamma-ray photons emitted during the annihilation of an electron-positron pair
6 + understand that the gamma-ray photons from an annihilation event travel outside the body and can be detected, and an image of the tracer concentration in the tissue can be created by processing the arrival times of the gamma-ray photons

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this morning i worked on the second wiki pedia based website, site6. it was nice, i downloaded the template so that's where i can find it i hope. also yesterday i found a cool template ethat looks like a windows 98 and i plan to use it for arg purposes.

also, i went to this website link
to get my site indexed

Today marks the first day i try this blog. I have been planning my novel and its ARG marketing for a while now, have made a lot of things, placeholders , rough things that still need polishing. but by god ive done a lot. Anyway im trying not to overwhelm myself. Yesterday i copied a random template and had a lot of fun changing the colors to see how everything works through trial and error. it was really fun. i planned on using this as 'margin notes' where i can talk about my writing. anyway

today i decided i would not use the name Busan for the city of my arg, as it appears alot in these nodes and psa's. i ve chosen the name Yeosan because Yeosu's love. turns out its a ateez member. but i searched and not a lot popped up so that's good, anyway i made a wikipedia themed Yeosan page today, excited

can't wait for May 20th to come so i can start planning this out.
Lots of ARG stuff i want to try, neocities stuff, and the social media huh. it's going to be great
also i found a cool account here yesterday by the name of mental labour. they've read sooo much stuff and they brain seems so smart. i saw that theyve linked their email to neocities, i told claude if i should email, then said no he's probably gets a lot of messages by smarter people. it said, He has his email linked to a neocities website i'm sure he's not flooded with messages. And you messed around with javascript came up with the 'not brother but ____' storyline. lmao i laughed so hard.