Key Figures and Films of Italian Neorealism
Robert Rossellini
- Neorealism trilogy: Germany Year Zero, Paisa, Rome Open City
- “There are many kinds of neorealism. Everyone has his own. Mine was a moral position, an effort to understand myself inside a phenomenon.”
Rome Open City (1945)
Right when WW2 ended.
- Engineer Giorgio, priest Don Pietro, Pina and Francesco, Son Marcello, Giorgio’s ex-Girlfriend Marina (betrayed resistance in exchange for drugs and fur coats)
- Scene when Pina got shot: “Few scenes in cinema have the force of that in which Magnani,
Space Exploration: History and Fundamentals
C = 2πr v = √(GM/r) {G-m3kg-1s-2} a = v2/r {r=Er+orbr} n1l=tendencyStaySameSpeedunlessForce n2lF=ma n3l=f-f f12=Gm1m2/r122 w=fd v=√(2gh) ep=-GerthMobj/r v=√(Gm(2/r-1/a)) p>=mv> f>t2-1=p2-1> mf linear mr_ mf expo..v2-1 _v2-1 is/ exh v{ion engines}
Planetary Exploration Stages
What stage of planetary exploration follows sending a successful flyby? Orbiter
Historical Parallels and Mythology
What historical era does our golden planetary age resemble? Age of Maritime Greek Mythology
Which
Read MoreUnderstanding Energy: Kinetic, Potential, and Transformations
Understanding Energy
1. How do you define energy? It is the ability to produce work.
Main Forms of Energy
2. Main forms of energy: heat, light, electrical, chemical, atomic, mechanics.
Mechanical Energy
3. What is mechanical energy? It is a form of energy that corresponds to work produced by a force of mechanical origin.
4. There are two kinds of mechanical energy: kinetic and potential.
Kinetic Energy
5. A body in motion has kinetic energy.
6. The value of the kinetic energy of a body is equal to half the
Read MoreUnderstanding Light: Theories, Speed, and Geometric Optics
Nature of Light:
1) Corpuscular Theory: Proposed by Pythagoras, this theory suggests that light consists of tiny particles emitted from luminous bodies. Newton further developed this idea, stating that light is formed of small particles. When these particles encounter a surface separating two optically distinct media, they are either repelled (reflected) or attracted (refracted), following the laws of elastic collisions.
Elastic Collision Laws: The incident ray, the reflected ray, and the normal line
Read MoreUnderstanding Inertia, Moment of Inertia, and Flywheels
Inertia
Inertia is the resistance that opposes difficulty or a physical system or a social system to change.
In physics, we say that a system has more inertia when it is more difficult to change its physical state. The two most common uses in physics are mechanical inertia and thermal inertia. The first one appears in mechanics and is a measure of the difficulty to change the state of motion or repose of a body. The mechanical inertia depends on the amount of mass and the inertia tensor. The thermal
Read MoreWave Types, Properties, and Electromagnetic Spectrum
Types of Waves
Waves can be classified based on several criteria:
A) Type of Energy Propagated
- Mechanical Waves: These waves propagate mechanical energy caused by a harmonic oscillator. If the wave is harmonic, it’s called a harmonic wave.
- To produce mechanical waves, you need:
- A source of mechanical energy.
- A material medium that can be disturbed.
- Electromagnetic Waves: These waves propagate electromagnetic energy due to oscillations caused by accelerated electric charges.