Capricorn: Sign #10, resolved numerologically as
1+0=1 Aries: Sign #1
Capricorn is Element earth=physical-matter
Aries is Element fire=energy (electricity and explosives
10->1, creating energy from matter).
Cardinal-sign Ages are innovative, and the first explosive of the tropical Age of Capricorn was gunpowder in the 9th Century A.D., with firearms eventually superseding the bow and arrow of the previous Age of Sagittarius.
Late in the Age of Capricorn, in the 19th Century, electricity began to be generated and utilized, for materialistic purposes, as the Age began its culminating phase. Innovation is opposed by the power of Tradition, so the most representative inventions of a Cardinal-sign Age are held back until the last 5 degrees. For the Age of Libra, that was c. 3300 B.C.E., most importantly the use of written language.
as a symbol, is NOT about lightening, or the production and use of electrical technology. It's about Mind-waves, even though its designed to suggest Water-waves, as in "Aqua".
Aquarius - air sign - The water bearer
Uranus - electricity
Uranus is about electricity. I like the mind wave thing.
The reason electricity became associated with the Age of Aquarius is the confusion of the culmination of this Cardinal-sign Age with the beginning of the Aquarian Age. With only the sidereal Age of Pisces to go on, it didn't make sense to assign explosives or electricity to Mutable-Water. Notice the E=Mc squared, creating energy from matter, connection to the 10th-Sign numerology.
Fixed-sign Ages become effective immediately, because the innovations are already available from the previous Cardinal-sign Ages, and because Traditional resistance is already pushed aside. But, the Mean-setting of the Age-indicator has to have actually ingressed the Fixed-sign for this to occur. That's the year 2149 for the tropical Aquarian Age. The Orb-effect does add Fixed-sign qualities to the culminating period of the Cardinal-sign Age, but doesn't cause the Fixed-sign Age to "jump the gun", so to speak, and interfere with the Cardinal-sign innovations, although it might be affecting what direction they take.