How to Make/Build a Crystal Radio
11:45
YouTubeRimstarOrg
How to Make/Build a Crystal Radio
Step-by-step instructions for making a tunable crystal radio. This is a radio that gets its power from the radio waves. I made it almost entirely from junk except for the diode (1N34 germanium diode) and the earpiece (though you can use a speaker from a phone instead.) The capacitor is made from aluminum foil and a paper towel roll. The coil is ...
1.2M viewsFeb 17, 2012
Arecibo Observatory Collapse
New dramatic drone footage shows the moment support cables holding up the Arecibo Observatory in Puerto Rico snapped, sending the famous observatory that had been in operation since the 1960s crashing to the ground. https://abcn.ws/2VxDuBP | ABC News
1:39
New dramatic drone footage shows the moment support cables holding up the Arecibo Observatory in Puerto Rico snapped, sending the famous observatory that had been in operation since the 1960s crashing to the ground. https://abcn.ws/2VxDuBP | ABC News
FacebookABC News
208K viewsDec 3, 2020
Arecibo Observatory Destruction Captured By Drone And Control Room
1:38
Arecibo Observatory Destruction Captured By Drone And Control Room
MSNSpace
3 months ago
Arecibo Observatory Destruction Captured By Drone And Control Room
Arecibo Observatory Destruction Captured By Drone And Control Room
MSN
1 month ago
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Arecibo Observatory History
An Oral History of the Arecibo Observatory
An Oral History of the Arecibo Observatory
adafruit.com
1 month ago
In 1974, the Arecibo Observatory made history by beaming the most powerful radio message into deep space ever made. The famous Arecibo Message was designed by the AO 74’s staff, led by Frank Drake, and with the help of the astronomer and famed science communicator Carl Sagan. It contained information about the human race and was intended to be our intergalactic calling card. Now is your turn to make the #NewAreciboMessage Make history here: www.areciboobservatory.org/challenge/ | The Arecibo Obs
4:08
In 1974, the Arecibo Observatory made history by beaming the most powerful radio message into deep space ever made. The famous Arecibo Message was designed by the AO 74’s staff, led by Frank Drake, and with the help of the astronomer and famed science communicator Carl Sagan. It contained information about the human race and was intended to be our intergalactic calling card. Now is your turn to make the #NewAreciboMessage Make history here: www.areciboobservatory.org/challenge/ | The Arecibo Obs
FacebookThe Arecibo Observatory
2.6K viewsNov 16, 2018
362K views · 2.5K reactions | This shocking footage shows the moment a famous telescope in Puerto Rico collapsed — here’s how it helped scientists make important contributions to astronomy when it was still standing | NowThis | Facebook
3:51
362K views · 2.5K reactions | This shocking footage shows the moment a famous telescope in Puerto Rico collapsed — here’s how it helped scientists make important contributions to astronomy when it was still standing | NowThis | Facebook
FacebookNowThis
362.2K views3 weeks ago