Sunday, August 26, 2007
Applying what I know about RadiationThe questions can be seen on this document: Download
1.a.
1.Why is it necessary to get back the stolen radioactive materials?
2.Why is Iridium not harmful after 72 hours?
3.What does the Sentinel model 660b look like?
ANSWERS:
1. Because prolonged exposure to these Radioactive materials pose possible danger to the people who are exposed to them.
2. Because it loses half of its activity
3. It looks like a "wooden shoeshine box," according to De la Rosa. She said it measures 12 1/4 inches by 4 1/4 inches by 9 1/2 inches.
b.
1. What is the radioactive camera's composition? (what is it made of?)
2. Can these incident be a major threat to the country?
3. How can I know if the people I am with are exposed to these materials?
2.a.
I would instruct the students to put down the materials and ask them to leave and go to somewhere where they can be left alone (Much like quarantine..), then I would call the parents of the students and tell them about these incident.
Lastly, I will attempt to isolate the materials in a confined room, using protective gear.
b.
In order to arrive at the ideal course of action, I need to know the effects of Nuclear Radiation, how to identify radioactive materials (The characteristics of radioactive substances) and how to handle these substances.
Alpha, Beta, and Gamma.. with Positron on the side
lame title... (Kelan pa ba naging maganda mga title ng posts ko? hehe..)
What are Alpha Particles?
Particles that consists of two protons and two neutrons (meaning they are positively charged). Because of their large size, they lose energy quickly and therefore, has a weak penetrating power (they can be blocked by human skin). Even if they have low penetrating power, they are a highly ionizing form of radiation.
What are Beta Particles?
Particles that consists of fast-moving electrons ejected from the nuclei. They are smaller than Alpha particles, and can penetrate up to 1 or 2 cm of human flesh. According to this site,http://www.csun.edu/~vchsc006/356b/modE.html, beta particles has a moderate ionizing power.
What are Gamma Rays?
According to the site stated above, Gamma particles are electromagnetic radiation from the nucleus.
(According to en.wikipedia.org, gamma is not a particle, its a ray..)
They have great penetrating power, but weak ionizing power.
(I just noticed this thing.. Penetrating power is inversely proportional to ionizing power.. cool huh?)
What is a Positron?
It is the antimatter counterpart of the electron. It was discovered by Carl D. Anderson in 1932. It is the first evidence of the existence of antimatter. When it collides with an electron, electron-positron annihilation occurs, what happens in an electron-positron annihilation? The electron and the positron converts to its counterpart and the production of gamma ray photons.
Positrons are used in PETs (Positron Emission Topography) and in experiments on accelerator physics.
JOKE: WHO IS POSITRON?
Anak ni Megatron, Pamangkin ni Optimus Prime, inaanak ni Starscream, tsaka bestfriend ni Bumblebee... hahaha
hehe...
WAAAAAA!!!!
Hindi ako nakapunta ng robot fest sa shang!!! waaaa!!!! (bakit pa kasi pinagalitan kung kelan magpapaalam pumunta eh... badtrip...)
T_T
Tuesday, August 21, 2007
Another quarter, another chance... and a little bit of radiation :)It's the start of another quarter, and this time, I'll do something new, before the start of a lesson, I'll put something like "What I know about X..". And then, after a lesson, I'll put "What I learned about X...", cool huh?
What I know about Radiation
-Radiation is energy transmitted in the forms of waves
-It has good effects and bad effects
-The best known sources of radiation are: x-ray, uv rays, microwaves, infrared waves, or to sum it all up, light. Another known source of radiation is are nuclear explosions
-It has industrial uses
-It is usually related to high temperatures
-Certain devices (ex. Geiger counter) are used to detect radiation
-Radiation is all around us
Ahmm...
This blog is checked already by our teacher, mome.. Ahmm.. What can I say in this post?
Thanks for the pieces of advice, I'll try to improve this blog with that in mind.. (please check my grammar, I'm not sure if it's correct..)
Monday, August 6, 2007
At Last...The S. Test is over.. Not to be boastful or anything, but I think it is easier than the first, but a lot longer..
But the Periodical Test (from hell?? hehe..) is fast approaching.. better study more :)
I think the other posts cannot be seen anymore.. please click on archives if you want to see older posts..
Sunday, August 5, 2007
Ahmmm....I haven't posted my thoughts this week.. So I'll post them :)
The Graded Recitation was held last week.. And I answered it correctly.. thanks
to the method of educated guessing... What the hell is that???
Hehe, You read it right... I guessed my answer, but it wasn't a wild one.. It was educated.
Ahmm.. There's another summative test this week.. And I think it will be another hour of nonstop headache and braindrains...
