space radiation by christos. the space-journey of the greek football team towards the european cup
TRANSCRIPT
Space Radiation By Christos
The space-journey of the Greek football team towards the
European Cup
Greece-France 1-0
Charisteas’ Goal
Greece-Czech Republic 1-0
Dellas’ Goal
Greece-Portugal 1-0Charisteas’ Goal
Radiation in General Radiation in general can be defined as energy in
transit in the form of high-speed particles and electromagnetic waves.
Radiation can be divided into the following categories in terms of its effect on the matter: Ionizing (UV, X and γ-rays <electromagnetic-radiation>,
protons, neutrons and heavier highly energetic particles .) Non ionizing (microwaves, radio waves, and visible light.)
What on earth is space radiation?
Space Radiation
Cosmic RaysMainly protons
Energies up to 1021eV
Solar RadiationTrapped particle
Radiationprotons & e-
Energy: Mev-GeV
ElectromagneticRadio to X-rays
Particulate
Low energyMainly protons & e-
Energy: Mev-GeV
High EnergyProtons & a’s
Energy: MeV-TeV
Cosmic Rays Discovered in 1912 by
the Austrian Victor Francis Hess but their origin remains an unsolved mystery until now!
Trapped Radiation
Solar Radiation Solar particle events are injections of energetic
electrons, protons, alpha particles, and heavier particles into interplanetary space.
The solar wind contains ions from almost every element in the periodic table; however, it consists primarily of protons and electrons.
http://sohowww.nascom.nasa.gov/
Why is space radiation harmful?
Type of Damage Prospects for DNA Repair
Single strand break in the DNA
Can usually be repaired and normal cell function restored
Breaks in both DNA strands
Usually damage is to severe for repair. The cell dies.
Chemical change or mutation
Cannot be repaired. Cancer may result or a mutated offspring if this occurs in a sperm or egg cell
In Conclusion
Space Radiation
Cosmic RaysMainly protons
Energies up to 1021eV
Solar RadiationTrapped particle
Radiationprotons & e-
Energy: Mev-GeV
ElectromagneticRadio to X-rays
Particulate
Low energyMainly protons & e-
Energy: Mev-GeV
High EnergyProtons & a’s
Energy: MeV-TeV