A
redshift occurs when a light source moves away from the observer. The wavelength
of the light increases and appears more toward the red end of the spectrum.
When the observer or the light source move toward each other, blueshift occurs.
Which
brings us to yellowshift.
In
Denver we have The Mercury Café. The atmosphere is dark, the food is
acceptable, and the service is excellent. But what makes The Merc exceptional
is the entertainment. Upstairs there’s music and dancing – the styles change
evening to evening. It’s all live and local.
Downstairs
is performance literature. One night a month is open mic night for Poetry.
Another is open mic for Flash Fiction – scatologically referred to as “F Bomb.”
In
March F Bomb Night fell on March 17, St. Patrick’s Day. I put on my favorite
green shirt in honor of Ireland’s favorite saint, a bit of makeup, my
Washington D.C. shoes, and I was ready to read.
“I
bet you think that shirt is green,” my daughter greeted me as I got into the
car.
Instantly,
I knew it must not be.
My
daughter has accused me of color blindness for some time now.
When
we went to see the Dale Chihuly glass exhibit last November in Denver’s Botanic
Gardens, she and her boyfriend entertained themselves by asking me “What color
do you think this one is?” and
“Is this blue to you?” or “Are these green?”
When
something is a shade of teal or turquoise I seem to see it as more green than
they do. Maybe more green than most people do.
So
during my annual eye exam I mentioned my accused color blindness to my
optometrist.
“Let’s
check it out,” he says and brought out a book of photos – numbers formed by
different colored circles mixed among other colored circles.
I
passed with flying colors. (Pun intended.)
“You
remember I told you you have cataracts?” he asked then quickly reassured me
again that the cataracts are not bad enough to do anything about, yet. “When
you see through cataracts, things look more yellow than they would normally.
And what do you get when you mix blue and yellow?” he asks.
“Green!”
I say. “Yellowshift.”
“You
could say that,” he humors me. Then he tells me about a patient he had last
month. She’d had cataract surgery so he asked her how she was doing. “She said ‘fine,
but I had to repaint the kitchen.’ Repaint the kitchen?” he asked. “‘Yes,’ she
says. ‘It was such an ugly color and I hadn’t realized until the cataracts were
removed.’”
So
I’m not color blind. What can I say?
Shift happens.
Last line made me laugh!
ReplyDeleteAnabel's Travel Blog
Adventures of a retired librarian
You have warned me of a phenomenon I did not know of -- no major color choices until the cataracts are fixed.
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