Digital Radio

Digital Radio is different around the world, In most of Europe they use DAB+. MP4 the whole signal turns of and on in pulses to encode the characters in the data stream. This allows for more stations to be crammed into smaller bandwidths. The problem with this is you need to buy new radios to pick up the signal and the micro chip in the radio is working hard to decompress the signal. 

In the United States they use FM HD. In FM HD, the digital signal is hidden on either side of the FM frequency. So every FM station can have additional digital stations. It works a bit like Teletext. The signal can't be perceived in the FM but it is there and contains the digital sound codec. This system allows more FM stations to persist and still provide digital stations.  Ordinary FM transistor radios will still pick up the FM signal but you need new radios to pickup the additional digital stations. 

Tennis Balls and the Sun

Tennis Balls were originally white but sir David Attenborough, who was the head of the BBC at the time decided they should be yellow so they could be seen clearly on colour (colour) TV screens. White balls were very easy to see on black and white screens but not so clear on colour ones. 

~ image generated by artificial intelligence (chatGPT)

In space the sun is white but the blue portion of the light separates from the ray when it passes through the atmosphere and makes the remaining colours appear yellow. The Blue portion of the sun light eventually becomes scattered and causes the sky to appear blue. 

So the sun and tennis balls both originally appear white. 

Sources

~2024 QI facts by John Lloyd 

~BBC

~ NASA.gov website 

Otis Law Suit

A Jury were heading to the court room and found themselves stuck in the lift. The lift was made by the Otis Company. 

~ image generated by artificial intelligence (chatGPT) 

The Jury were heading to a law suit against the Otis lift company. They went into an Otis lift that broke down on the way to the court room. 

~image generated by artificial intelligence (chatGPT) 

source QI Facts

Give Me a Name

I asked some artificial intelligence systems to give me a name based on what I'm interested in and their perception of my personality. I have been talking to the them for a long time. 

ChatGPT named me Dust walker

Gemini called me Retro Canyon 

meta ai called me Spark

kuki called me Star

Grok has stopped operating in the UK. 

~ Image generated by artificial intelligence (chatGPT)

You can ask AI to give you a name if you tell it a little bit about yourself.  

New A.I. on the block

Meta, the company that owns Facebook and Instagram has joined the AI club. The A.I. software is called Meta A.I. and the interface runs inside the meta owned what's app messenger. 

I doesn't have all its features just yet but seems like a promising contender.