Science News
[email protected]
My neighbor complained that his issue of Science News hasn't arrived. He
has a theory. He thinks the substitute mail carrier is a fundamentalist who is
losing mail on purpose if it supports evolution.
My neighbor is getting old and crazy.
But it did remind me of Science News. I wouldn't recommend it as anything
resembling curriculum/text/assignments, but I would highly recommend it as
bathroom reading or something to have in the car to read at redlights or in
waiting rooms or...
The articles are short, it comes every week, and if anything looks
interesting there's the internet to find out more or see photos or read the commentary
of others who are interested in new developments in science.
If a mom feels unsure about science and what all it can be or touch upon,
this might be a good thing for her to read and maybe bring the good parts up in
conversation with the family. We got it years ago, and maybe we should
again, but not right now. Christmas wiped us out, and two car repairs, and ...
But it's a pretty cool small magazine.
Sandra
[Non-text portions of this message have been removed]
has a theory. He thinks the substitute mail carrier is a fundamentalist who is
losing mail on purpose if it supports evolution.
My neighbor is getting old and crazy.
But it did remind me of Science News. I wouldn't recommend it as anything
resembling curriculum/text/assignments, but I would highly recommend it as
bathroom reading or something to have in the car to read at redlights or in
waiting rooms or...
The articles are short, it comes every week, and if anything looks
interesting there's the internet to find out more or see photos or read the commentary
of others who are interested in new developments in science.
If a mom feels unsure about science and what all it can be or touch upon,
this might be a good thing for her to read and maybe bring the good parts up in
conversation with the family. We got it years ago, and maybe we should
again, but not right now. Christmas wiped us out, and two car repairs, and ...
But it's a pretty cool small magazine.
Sandra
[Non-text portions of this message have been removed]
nellebelle
Is this the same organization?
http://www.sciencenews.org/
You can sign up for e-newsletters too.
Mary Ellen
http://www.sciencenews.org/
You can sign up for e-newsletters too.
Mary Ellen
----- Original Message ----- But it did remind me of Science News. I wouldn't recommend it as anything resembling curriculum/text/assignments, but I would highly recommend it as bathroom reading or something to have in the car to read at redlights or in waiting rooms or...
[Non-text portions of this message have been removed]
pam sorooshian
An example from Robert Krampf's list:
From: KRAMPF@...
Subject: Krampf #405 Microwave Hot Spots
Date: December 13, 2004 4:34:57 PM PST
To: [email protected]
Reply-To: [email protected]
Robert Krampf's Experiment of the Week
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
This Week's Experiment - #405 Microwave Hot Spots
Greetings from Sarasota, Florida. I will be here all week, doing more
science shows for Florida Power and Light. Then I head home! After
months on the
road, it will be wonderful to be home, even if it is only for a couple
of
days. Then I am heading back to Memphis to celebrate the holidays with
my family.
After last week's experiment, I had quite a bit of chocolate laying
around,
so I looked for other experiments to try with it. It will help show
why most
microwave ovens have a turntable to rotate the food. You will need:
a large, flat chocolate bar
a paper plate
a rope
a microwave oven
Open the microwave oven and remove the turntable, if it has one. We do
not
want the chocolate to move as we are heating it. Place the chocolate
on the
paper plate. We are using paper because some regular plates get hot in
a
microwave oven. That would interfere with our experiment.
Place the plate with the chocolate into the oven. Be sure that it will
not
be moved by the center spindle as it turns. Set the timer for about 10
seconds
and start the oven. Watch carefully as the oven runs, to be sure that
the
chocolate is not moving. After 10 seconds, look at the chocolate, but
do not
move it. Do you see any melted spots? If not, then cook it for
another 5
seconds and check again. Continue cooking for 5 seconds at a time
until you see
melted spots in the chocolate.
Carefully examine the chocolate, being careful not to burn your finger
on the
melted candy. Why did some parts remain cool, while others got hot
enough to
melt? It does not mean that there is anything wrong with your oven.
All
microwave ovens work that way. To cook your food, the microwave oven
produces
something called a standing wave. Since it is easier to make one than
to
describe one, lets produce our own standing wave.
Tie one end of a rope to a doorknob or some other stationary object.
Move
several feet away and take up the slack in the rope. Jerk the rope
quickly to
the side and watch as it produces a wave that moves along the rope.
Notice how
the wave moves from your hand towards the other end. Next, shake the
rope
quickly from side to side. Watch the pattern of the rope as you shake
it faster
and slower. Watch for the point where the waves seem to stop moving
away
from you. At that point, you will notice that you have several waves
in the
rope, separated by points on the rope that are hardly moving at all.
When you
reach that pattern you have produced a standing wave.
Your microwave oven produces standing waves of microwave energy. At the
points where the wave is at its highest, you get the most heat. At the
points
where the wave is hardly moving, things stay cool. Turning the food
moves these
points around, helping the food cook more evenly.
Be aware that melted chocolate can get very hot. Do not touch it with
your
skin. As a safety precaution, mix the melted chocolate with something
cold,
such as vanilla ice cream. Add some chopped nuts and then dispose of it
properly.
Have a wonder filled week.
****************************************
This weekly e-mail list is free from charge. You are welcome to
forward it
to friends, print it in your newsletter, repost it on the Internet,
etc., as
long as you do not charge for them and my name and e-mail address are
included.
Please forward this e-mail to anyone that you think might enjoy it.
To join the list, send a blank e-mail to: krampf-subscribe@...
on-line archives are located at:
http://groups.yahoo.com/group/krampf/messages
http://www.topica.com/lists/krampf/read
***************************
Robert Krampf's on-the-road schedule:
My calendar is now on-line. You can see a detailed calendar, with
dates,
times, schools, etc. at http://www.krampf.com/m_tour.html
***************************
Check out my web site at:
http://www.krampf.com
From Robert Krampf's Science Education Company
PO Box 60982
Jacksonville, FL 32236-0982
904-388-6381
From: KRAMPF@...
Subject: Krampf #405 Microwave Hot Spots
Date: December 13, 2004 4:34:57 PM PST
To: [email protected]
Reply-To: [email protected]
Robert Krampf's Experiment of the Week
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
This Week's Experiment - #405 Microwave Hot Spots
Greetings from Sarasota, Florida. I will be here all week, doing more
science shows for Florida Power and Light. Then I head home! After
months on the
road, it will be wonderful to be home, even if it is only for a couple
of
days. Then I am heading back to Memphis to celebrate the holidays with
my family.
After last week's experiment, I had quite a bit of chocolate laying
around,
so I looked for other experiments to try with it. It will help show
why most
microwave ovens have a turntable to rotate the food. You will need:
a large, flat chocolate bar
a paper plate
a rope
a microwave oven
Open the microwave oven and remove the turntable, if it has one. We do
not
want the chocolate to move as we are heating it. Place the chocolate
on the
paper plate. We are using paper because some regular plates get hot in
a
microwave oven. That would interfere with our experiment.
Place the plate with the chocolate into the oven. Be sure that it will
not
be moved by the center spindle as it turns. Set the timer for about 10
seconds
and start the oven. Watch carefully as the oven runs, to be sure that
the
chocolate is not moving. After 10 seconds, look at the chocolate, but
do not
move it. Do you see any melted spots? If not, then cook it for
another 5
seconds and check again. Continue cooking for 5 seconds at a time
until you see
melted spots in the chocolate.
Carefully examine the chocolate, being careful not to burn your finger
on the
melted candy. Why did some parts remain cool, while others got hot
enough to
melt? It does not mean that there is anything wrong with your oven.
All
microwave ovens work that way. To cook your food, the microwave oven
produces
something called a standing wave. Since it is easier to make one than
to
describe one, lets produce our own standing wave.
Tie one end of a rope to a doorknob or some other stationary object.
Move
several feet away and take up the slack in the rope. Jerk the rope
quickly to
the side and watch as it produces a wave that moves along the rope.
Notice how
the wave moves from your hand towards the other end. Next, shake the
rope
quickly from side to side. Watch the pattern of the rope as you shake
it faster
and slower. Watch for the point where the waves seem to stop moving
away
from you. At that point, you will notice that you have several waves
in the
rope, separated by points on the rope that are hardly moving at all.
When you
reach that pattern you have produced a standing wave.
Your microwave oven produces standing waves of microwave energy. At the
points where the wave is at its highest, you get the most heat. At the
points
where the wave is hardly moving, things stay cool. Turning the food
moves these
points around, helping the food cook more evenly.
Be aware that melted chocolate can get very hot. Do not touch it with
your
skin. As a safety precaution, mix the melted chocolate with something
cold,
such as vanilla ice cream. Add some chopped nuts and then dispose of it
properly.
Have a wonder filled week.
****************************************
This weekly e-mail list is free from charge. You are welcome to
forward it
to friends, print it in your newsletter, repost it on the Internet,
etc., as
long as you do not charge for them and my name and e-mail address are
included.
Please forward this e-mail to anyone that you think might enjoy it.
To join the list, send a blank e-mail to: krampf-subscribe@...
on-line archives are located at:
http://groups.yahoo.com/group/krampf/messages
http://www.topica.com/lists/krampf/read
***************************
Robert Krampf's on-the-road schedule:
My calendar is now on-line. You can see a detailed calendar, with
dates,
times, schools, etc. at http://www.krampf.com/m_tour.html
***************************
Check out my web site at:
http://www.krampf.com
From Robert Krampf's Science Education Company
PO Box 60982
Jacksonville, FL 32236-0982
904-388-6381