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--- courses:ast100:5 [2024/12/14 12:15] – asad
+++ courses:ast100:5 [2024/12/14 12:16] (current) – [2. Periodic table] asad
@@ Line 1: / Line 1: @@
-====== 5. The Chemical Era ======
+====== 5. Chemical Age ======
 **Juno**: Our boat is now transitioning from the Brahmaputra to the Jamuna, making this the perfect time to begin discussing the Chemical Era. The connection between Krishna of Mathura and the Taj Mahal of Agra offers a deep metaphorical link to Yamuna’s lifeblood. But to start this era, we must first revisit Earth's 4.5-billion-year history because the first 4 billion years are essentially Earth's Chemical Era.
@@ Line 34: / Line 34: @@
 ===== - Periodic table =====
-<html><iframe class="pubchem-widget" src="https://pubchem.ncbi.nlm.nih.gov/periodic-table/#view=table&embed=true" style="width: 100%; height: 760px"></iframe>
+<html>
+<iframe src="https://pubchem.ncbi.nlm.nih.gov/periodic-table/#view=table&embed=true" width="100%" height="750" scrolling="no" frameborder="0"></iframe>
 </html>
-===== - Stellar oven =====
 {{:bn:courses:ast100:starfurnace.webp?nolink|}}
 ===== - Life on earth =====
 {{:bn:courses:ast100:life.webp?nolink|}}