diff --git a/docs/1b/ece140.md b/docs/1b/ece140.md
index bc0a8b0..65ed1c8 100644
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@@ -71,3 +71,9 @@ $$
(Source: Wikimedia Commons)
(Source: Wikimedia Commons)
+
+### Applications
+
+A **cathode ray tube** produces an electron beam of variable intensity depending on the input signal. Electrons are deflected by the screen to produce imagery.
+
+
(Source: Wikimedia Commons)
(Source: Wikimedia Commons)
+
+### Applications
+
+A **cathode ray tube** produces an electron beam of variable intensity depending on the input signal. Electrons are deflected by the screen to produce imagery.
+
+