Just-me UKChat Expert Joined Sep 21, 2022 Messages 25,416 Reaction score 5,386 Jul 4, 2023 #1,009 JohnM said: View attachment 140923 Click to expand... How do you know?
Just-me UKChat Expert Joined Sep 21, 2022 Messages 25,416 Reaction score 5,386 Jul 4, 2023 #1,011 JohnM said: It’s the perception of wavelength and frequency. Click to expand... What if it’s not?
Firefly UKChat Celebrity Joined Aug 11, 2021 Messages 10,092 Reaction score 33,913 Jul 13, 2023 #1,017