Eureka Copper
Eureka Copper
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 Eureka Copper River 30 Long Sleeping Bag Midnight Blue Silver  US $64.95
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 Eureka Copper River 30Degree Mummy Sleeping BagRegular US $62.99
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 Eureka Closeouts 16 x 10 Copper Canyon Copper Canyon 1610 2601307 US $291.99
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 Eureka Copper River 30 Degree Sleeping Bag Regul US $69.95
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 Eureka Copper River Sleeping Bag NEW US $61.99
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 Eureka Copper River 30 Degree Sleeping Bag Long US $74.95
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 Eureka Copper River sleeping bag US $6.00
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Eureka Copper Canyon 1512 12-Person Family Tent
Winter Time Is Midge Time When Fly Fishing For Trout
Let's face it, we dream in Technicolor of size 10 green drake
hatches or Hexagenia Limbata as big as beavers - but the reality
is Winter Time Is Midge Time. Often the only bugs on the frigid
water are so small; they challenge most anglers to consider
LASIK. And as you already know, much of the eating is under the
surface.
At a fly-tying class, I once heard a locally famous fly tier
named Pops quip something along the line of "my second best fly
tying material supplier is Hobby Lobby". This, of course,
assumes that Blue Heron Fly Shop where we were sitting is his
"first best". This guy is also well known for the quote "it
ain't no use, if it ain't chartreuse" but that, as they say, is
another story.
Armed with this nugget of wisdom, I scoured every section of
Hobby Lobby. Eureka! Great little wires for tying "ribs" of
nymphs, wonderful foam sheets for terrestrials, assorted yarn
varieties for ‘buggers, and beads, beads, beads! All this is
available at a fraction of the cost of their fly-shop
counterparts. Bingo!
From this magnificent Wall-O'-Beads, I found some fine little
metal ones in a small pinky-sized cylinder. They came in a
variety of colors like olive, purple, copper, and brown. Many
had fancy names like Brown Iris Metallic Beads (the one I took
home) and numerous others. Perfect. We ARE talking tiny here.
Just the right size to barely squeeze on to barb-less size 20
hooks and be proportionate.
Armed with these at my fly tying station, I began to
experiment. If you have ever collected and looked at tiny water
bugs, you will note their appendages and segmentations are not
distinct unless under a microscope. So, I combined the little
bead heads with many simple body materials trying to find a
simple-to-tie solution. I wanted to approximately match the
hatch from recent trips to the stream. I finally boiled it down
to dyed goose biots. I had originally experimented with biots to
tie Prince Nymphs at a much larger scale and certainly a
different application. My favorite biot color is olive, and man,
what a great subtle segmented body biots make. Ultimately, I
designed Duff's Bead/Biot Midge - perfect for fishing Winter's
cold waters. More than just this emerger, I developed a powerful
One-Two Punch combination that has proven itself over and over
in many tailraces throughout Texas and Oklahoma.
Though the tiny bead/biot midge is a killer as a dropper below
a larger nymph, the One-Two Punch consists of a dropper below a
similar looking dry. Before I give you the recipe, let me
describe the simplicity of these two flies. The dry fly is:
olive thread, olive biot, and olive/gray hackle on a size twenty
barb-less hook. The dropper, often fished just 6 inches below
the dry, is: olive thread, olive biot, and metallic bead on a
size twenty barb-less hook. Simple, right? It's really easy to
tie too. But don't let that make you feel guilty when you when
you catch numerous trout with it.
Duff's Dry Midge - Olive
Materials -
* Hook: Size 20 dry
* Thread: Olive 8/0
* Body: Goose Biot dyed olive
* Hackle: Olive/Gray sized to match hook gap
* Head: Olive Thread
Technique - Crush barb, put hook in vise, jamb knot thread and
wrap back to bend, tie in point of biot, wrap thread forward,
spiral biot forward leaving segmentation and tie down with half
hitch, tie in single hackle, trim base, wrap hackle and tie off,
whip finish forming head, add cement.
Duff's Bead/Biot Midge - Olive
Materials -
* Hook: Size 20 dry or scud/nymph
* Thread: Olive 8/0
* Body: Goose Biot dyed olive
* Head: Brown Iris Bead
Technique - Crush barb, place bead head on hook, put hook in
vise, jamb knot thread and wrap back to bend, tie in point of
biot, wrap thread forward, spiral biot forward leaving
segmentation and tie down with half hitch (optional - tie in a
few strands of crystal flash as a wing and clip close), whip
finish behind bead head, add cement.
For those who are not into fly tying but are into fly fishing
Scott has put together an assortment of dry flies and nymphs
that no fly fisherman should be with out. See Duff's
Ultimate Midge Pack.
Scott is a lead editor and contributor to SouthwestSportsman.co
m, a website dedicated to the enjoyment of the great
American outdoors.
About the Author
Scott McDuffee is a lead editor and contributor to SouthwestSportsman.co
m, a website dedicated to the enjoyment of the great
American outdoors.
help me with these numericals please!!!?
please help me with some questions as tomorrow i hve to submit assignment:-
1.what will be the change in the resistance of a eureka wire, when its radius is halved and length is reduced to one forth of its original length?
2.A given copper wire is stretched to reduce its diameter to half of its previous value. What will be its new resistance?
Please please please help me as if i m a layman i.e with full details.
Thank u.
1. What is a eureka wire?
eureka
exclamation
a cry of joy or satisfaction when one finds or discovers something.
But assuming it's a typo and it's some kind of metal, halving the radius will make the cross-sectional area 1/4 (because area is πr²), which increases the resistance by a factor of 4. Length reduced by 1/4 will decrease the resistance by 1/4. The two cancel and the resistance is unchanged.
2. When you stretch a wire, it's volume stays constant. So if the diameter is halved, the cross-sectional area is 1/4. The volume is cross-sectional area x length, so for the volume to stay constant, the length has to increase by a factor of 4.
The first will increases the resistance by a factor of 4. The length increase will also increases the resistance by a factor of 4, so total is 16 time the resistance.
The formula that governs here is
Resistance of a wire in Ω
R = ρL/A
ρ is resistivity of the material in Ω-m
L is length in meters
A is cross-sectional area in m²
A = πr², r is radius of wire in m
.
