onde elettromagnetiche

Plus de détails

L'inquinamento

par Giacomo Giacomo

calore mappa

par Giovanni Rossetti

OLIGOSACCARIDI

par desiree romano

L'ecologia è un lusso?

par Micaela Ciccone

ONDE ELETTROMAGNETICHE

Type in the title of your course.

la densità di energia totale u è uguale alla somma di densità di energia elettrica e magnetica

The evaluation must go hand-in-hand with course goals in order to achieve them and also help students to improve their skills.

Also, assignments and homework need to reflect and help achieve course goals.

u=(1/ μ0) *B^2

These can be partial - short evaluations after each segment of the course - or final - a final exam which will assess all the knowledge aquired during the school year at once.

u=ε₀ * E^2

Decide if you want the assignments completed during the year to represent 1/3 of the final grade.

composte da:

Determine the goals of the course.
Having these course goals in mind will then help you make decisions about which content to include and what kind of assignments and exams are appropriate.

Consider the following questions:

• What you want your students to remember from your course?
• What skills should students gain in this course?
• How does this course relate to other courses in the discipline?

campo magnetico

campo elettrico

al variare della lunghezza d'onda si dividono in:

Select the major topics and determine the order in which you will teach them.

raggi gamma

raggi X

radiazioni ultraviolette

campo visibile

radiazioni infrarosse

microonde

onde radio

sono onde trasversali

Arrange the topics in a logical order.

Discuss how and why you have organized the material in a particular way.

This will help students to see the connections between topics.

i campi elettrico e magnetico sono perpendicolari alla direzione di propagazione dell'onda

1. Chronological - you can organize the topics according to a theme or storyline.
2. Topical order - involves taking the topic of your speech and dividing it into several subtopics. The subtopics are related to the topic they branch out from.
3. Survey-oriented - this type of course structure is briefly treating the main topics of a broad field of knowledge.
4. A process-oriented syllabus focuses on the skills and processes involved in learning.

irraiamento S è il rapporto tra la potenza elettromagnetica e l'area della superficie attraversata

Select methods and tools according to

• the size of the class
• the course goals

S=P/A

S=c*u

S=c/μ0*B^2

S=c*ε₀*E^2

Don't forget to take into consideration if these methods can help you achieve the course goal too.

possono essere polarizzate

si propagano anche nel vuoto

v=3*10^8 m/s