Parallel Lines Project

2+ results

Robert Page, the Father of Radar

Created by

Robert Page was a physicist and a pioneering "Hidden Hero" whose work at the Naval Research Laboratory (NRL) gave the United States a massive technological edge. He is often called the "Father of U.S. Radar" because he solved the critical problem of how to make radar practical for actual combat.+1 The Problem: The "Wall of Silence"In the early 1930s, the concept of using radio waves to detect objects was known, but the technology was "blind." Scientists could send out a radio signal, but they c

4th - 9th

General Science, Informational Text, Reading

CCSS

RI.4.1

, RI.4.2

, RI.4.3

Also included in: The Hidden Heroes Mega Bundle

Why Transformers Need AC

Created by

Plug & Play Engineering

What’s Inside?The Instructor’s Rule: A breakdown of the three essential components needed to create electricity:AC vs. DC Comparison: A clear explanation of how alternating polarity creates magnet, and why DC fails .Safety & Theory: An explanation of Inductive Reactance and why connecting a transformer to DC isn't just a failure—it’s a fire hazard.Visual Summary Table: A quick-reference chart for students to compare AC and DC inputs at a glance.

Not Specific

Engineering, Instructional Technology, Marine Science