I don’t mean BETTER. That’s a different conversation. I mean cooler.
An old CRT display was literally a small scale particle accelerator, firing angry electron beams at light speed towards the viewers, bent by an electromagnet that alternates at an ultra high frequency, stopped by a rounded rectangle of glowing phosphors.
If a CRT goes bad it can actually make people sick.
That’s just. Conceptually a lot COOLER than a modern LED panel, which really is just a bajillion very tiny lightbulbs.
Similarly, at airports they had these alternating white and blue lights that would sweep the sky for miles around. When we were on the road at night I used to know where we were based on that. I loved it.
Flight instructor here. That is called a beacon, and airports still have them. And none of them have ever been blue. It may appear blue from the ground but the beam is actually green. The colors actually encode what kind of airport they’re at.
At a normal civilian airport that has runways, the beacon will be green and white.
At a military airfield, the beam will flash green and then two whites.
At a heliport with only helipads for helicopters, the beacon will be green, yellow, white.
At a seaplane base, the beacon will be white and yellow.
The beacon will operate from sunset to sunrise, and also during daylight when instrument conditions prevail.
Bonus airport light fact: some smaller, less busy airports like your typical county airport probably does not turn all of its surface lights on all of the time. It’ll run the beacon to help pilots find the airport, but the runway and taxiway lights will remain off. Pilots are able to turn them on from the air by tuning their radios to the airport’s UNICOM frequency and pushing the PTT key several times in rapid succession. Quite often the brightness is controllable whether you press the key 5, 7 or 9 times. This is called Pilot Controlled Lighting. It’s an energy saving system that’s been around for decades now, and a fun magic trick for private pilots to pull on their friends lucky enough to be invited on a night flight.