Want to know:
LES FOYERS:Différents types de foyers:-Foyer _________(ou foyer réel): c'est la surface d'interaction du faisceau d'électrons et de l'anode -Foyer _________(ou foyer virtuel): -correspond à la projection géométrique du foyer thermique -il conditionne: -la charge thermique -la définition de l'________ produite par le manipulateur Utilité: -Ils conditionnent la définition de l'image et la _______ de la charge thermique ou ________ thermique -Ce sont les différentes projections sur l'anode ou à sa __________
Get a detailed, AI-powered explanation for this question and thousands more on StudyFetch.
Get the Answer for FreeHow StudyFetch Helps You Master This Topic
AI-Powered Answers
Get instant, detailed explanations powered by AI that understands your course material.
Deep Understanding
Go beyond surface-level answers with step-by-step breakdowns and examples.
Personalized Learning
Spark.E adapts to your learning style and helps you connect ideas.
Practice & Test
Turn any question into flashcards, quizzes, and practice tests to solidify your knowledge.
Explore More Questions
- Which of the following best describes formative assessment and its purpose? A. This type of assessment consist of daily written assignments that can be graded quickly and returned to students so that both the students and the teacher can monitor the students progress. B. This type of assessment should be completed at the end of an instructional unit so that both the teacher and students can see if learning goals and objectives were met. C. This type of assessment is informal, consisting of reflection and questioning by both the teacher and the students to judge the effectiveness of each days instruction. D. This type of assessment is ongoing and utilizes a variety of assessment techniques to allow the teacher to gauge student understanding so that he or she can make appropriate adjustments to instruction.
- Pontius Pilate, a Roman governor, ordered the crucifixion of who?
- The Glorious Revolution led to the establishment of the Europe's first constitutional monarchy—a system of government in which