In one sentence, describe what the following article is about: The strength of a diode will be listed in microwatts (mW). The color of the diode will be determined by its wavelength (measured in nanometers, nm). A wavelength of 650 nm corresponds to a red laser, a wavelength of 405 nm corresponds to a blue laser, and  a green laser has a wavelength around 520 nm. Green lasers are the most expensive, followed by blue. Red is the cheapest. You can buy diodes online and sometimes at electronic supply stores. The diode costs can range anywhere from tens to thousands of dollars, depending on the laser you choose. If you aren't picky about the color, you can take apart an old DVD or Blu-Ray disk burner. There will be two diodes. Find the diode on the disk burning side. The one on the disk reading side is not strong enough to produce a burning laser. The diode will look like a small round light. It is likely encased in metal and will be positioned so that it can shine on the bottom of the DVD/Blu-Ray tray. Once you have located the disk burning diode, remove it from the DVD (or Blu-Ray) burner. You may have to remove small screws or cut the diode away from the rest of the burner. It is possible that the diode is encased in a metal casing. If this is the case, the casing can be left on the diode after you remove it.
Summary: Select a diode strength and color. Take apart an old DVD or Blu-Ray disk burner. Salvage the diode from the disk burner.

It’s possible for a lump to look like a lipoma but really be something else. Since lipomas aren’t painful, experiencing pain might be a sign that your lump is something else. Similarly, it’s best not to try treating a new lump or an area of swelling until you’ve had it checked by a doctor. Your lump is most likely not a cause for worry, but it’s good to be sure that it’s a lipoma rather than something else. These tests will help your doctor make sure what you have is really a lipoma. In most cases, your doctor will do your diagnostic tests quickly in their office.  You shouldn’t feel any pain when your doctor takes a biopsy, but you may experience discomfort. Before taking a biopsy, your doctor will numb the area around the lipoma. Then, they’ll use a thin needle to take a small sample from the lump. Finally, they’ll examine the sample under a microscope to make sure it’s a lipoma. The X-ray, MRI, and CT scan are all imaging tests. In most cases, your doctor will just do one of them. An X-ray can show a shadow where the lipoma is located, while an MRI and CT scan can show the lipoma in more detail. If you have a small lipoma that is interfering with your daily life, your doctor may be able to remove it using liposuction. To do this procedure, your doctor will administer a numbing agent near the lipoma so you won’t feel pain. Then, they’ll use a needle to suck out the fatty tissue in the lipoma. This simple procedure is quick and doesn’t require much downtime. However, you might experience soreness, discomfort and bruising. If your doctor thinks surgery is the right option for you, they’ll usually sedate your before surgery. To remove the lipoma, they’ll make a small incision and then extract the lipoma from your body. Finally, they’ll stitch up the incision.  After surgery, you may have some scarring around the area. However, the scar likely won’t be very noticeable. Additionally, discomfort and bruising are common in the days after surgery. You might also consider surgery if the lipoma is affecting how you feel about your appearance.
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One-sentence summary -- See your doctor if you feel pain or discomfort, have a new lump, or see swelling. Expect your doctor to do a tissue biopsy and an X-ray, MRI or CT scan. Ask your doctor if liposuction can treat a lipoma that’s bothering you. Consider surgical removal if the lipoma restricts your movement.

Problem: Article: Not everyone has all of the same signs or symptoms of depression. Everyone is different in terms of how severe each symptom is. Keep in mind that some people experience multiple major depressive episodes throughout life, while others just experience mild depression that may not last as long. Some symptoms of depression include:  Feelings of hopelessness or worthlessness Loss of interest in pleasurable activities Fatigue or low energy Irritability Changes in appetite and sleep Difficulty focusing on and meeting responsibilities Suicidal thoughts Because depression symptoms interfere with how your boyfriend functions in everyday life, you may experience difficulties in your relationship. You may take on more than your “fair share” in the relationship for a little while, but if your boyfriend is able to get treatment for depression, this won’t last forever.  He may have stopped going to work, which can put a financial burden on you. He may avoid social interaction, which can leave you feeling isolated. He may be less interested in sex, which can affect intimacy. You may have to take on more household responsibilities and chores. There are many different treatment options out there for depression. The first step is often going to a primary care physician, who can rule-out other conditions, recommend medications, and recommend a therapist or psychiatrist. Getting treatment earlier may help reduce symptoms quickly and get your boyfriend out of treatment sooner. Treatment options include:  Medication Sessions with mental health counselor, social worker, or psychiatrist Support groups Dietary and lifestyle changes Relaxation techniques, mindfulness, and meditation Alternative methods, like acupuncture and vitamins Depression is a serious condition. Your boyfriend may attempt suicide or have suicidal thoughts. If your boyfriend is very depressed and hopeless, he may not see any way out of it. Call 911 or your boyfriend’s doctor or therapist if you notice any of these warning signs:  Acting recklessly or dangerously. Saying goodbye and giving belongings away. Talking about hurting himself. Being preoccupied with death. Men may experience depression in unique ways that aren't noticeable as depression. For example, they may act more irritably or aggressively when depressed. Other signs your boyfriend may be depressed without telling you include:  Drinking or other reckless behavior. Withdrawing from your relationship. Having an affair with someone else. Experiencing more physical aches and pains.
Summary:
Educate yourself about depression. Expect new challenges in your relationship. Learn what treatment is available. Know the risk of suicide. Watch out for atypical behavior.